BillyBuild and Guide

Character
Introduction

Billy is an
A Rank
rank character with the Physical attribute who belongs to the
Attack
Attack Specialty and who is part of the
Gentle House AKA Cunning Hares
Cunning Hares faction.

A handsome cyborg with a casual and carefree personality. He's an avid fan of the Starlight Knight show, not only referring to himself as one of the Starlight Knights, but repeating many classic lines from the show. Refers to his pair of special custom-made high-caliber revolvers as "the girls". They appear to have been a gift from an old friend. He may look unreliable, but once he gets serious Billy can take on any challenge.

To learn more about Billy check the sections below. Use the tabs to quickly switch to the kind of information you're looking for.

Video guide

Billy has at least one video guide available, so if you prefer this sort of medium to learn more about a character, check it out:

Update tracker

Last review/pros & cons update

Patch 1.0

Last build/calcs update

Patch 1.0

Last teams/synergies update

Patch 1.4

Last profile update*

December 17th, 2024

*Profile update means smaller edits to disk drives, stats or other things that don't require new calculations.

To learn more about Billy check the sections below. Use the tabs to quickly switch to the kind of information you're looking for.

Profile

Review

Build

Shiyu Defense

Rotation & Teams

Calculations

Profile

Core skills
Core

Core Passive Steady Shot

Lv. 1

Billy's DMG increases by 25% when he enters Crouching Shot during his Basic Attack. The effect ends if he moves, returns to standby, or is knocked back or launched by an attack.

CRIT Rate: 0

BASE ATK: 0

Core

Additional Ability Team Starlight

When another character in your squad shares the same Attribute or Faction:

After Billy uses a Chain Attack, the DMG of his next Ultimate is increased by 50%, stacking up to 2 times. This effect resets whenever an Ultimate is activated.

Skills
Basic
Basic
Dodge
Dodge
Assist
Assist
Special
Special
qte
Chain
Core

Basic Attack: Full Firepower

Press to activate: Unleashes a piercing attack, dealing Physical DMG. Repeatedly press or hold to enter Crouching Shot to extend the attack duration. Drag the joystick during Crouching Shot to launch Rolling Shot and adjust the character's position, dealing Physical DMG. Stop pressing or holding during Crouching Shot to launch Finishing Shot at enemies in front, dealing Physical DMG.

Lv. 1
Standing Fire DMG Multiplier
68.00%
Standing Fire Daze Multiplier
54.40%
Standing Bullet DMG Multiplier
7.60%
Standing Bullet Daze Multiplier
6.10%
Crouching Fire DMG Multiplier
61.80%
Crouching Fire Daze Multiplier
54.70%
Crouching Bullet DMG Multiplier
12.70%
Crouching Bullet Daze Multiplier
8.90%
Rolling Shot DMG Multiplier
61.80%
Rolling Shot Daze Multiplier
54.70%
Finishing Shot DMG Multiplier
49.50%
Finishing Shot Daze Multiplier
55.20%
Core

Dodge: Risky Business

Press to dodge. A rapid dodge. Character is invulnerable while using this skill.
Core

Dash Attack: Starlight Sanction

When dragging the during a dodge, press : Launches a piercing attack at nearby enemies within a large area, dealing Physical DMG. When not dragging the during a dodge, press : Launches a piercing attack at enemies in a line, dealing Physical DMG.

Lv. 1
360-degree Shot DMG Multiplier
63.10%
360-degree Shot Daze Multiplier
63.00%
Straight Shot DMG Multiplier
39.00%
Straight Shot Daze Multiplier
19.50%
Core

Dodge Counter: Fair Fight

Press during a Perfect Dodge to activate. Pierces enemies in front, dealing Physical DMG. Character is invulnerable while using this skill.

Lv. 1
DMG Multiplier
221.40%
Daze Multiplier
193.40%
Core

Special Attack: Stand Still

Press to activate. Performs up to 3 piercing attacks in a line, dealing Physical DMG. Anti-Interrupt level is increased while using this skill.

Lv. 1
1st-Hit DMG Multiplier
24.20%
1st-Hit Daze Multiplier
24.20%
2nd-Hit DMG Multiplier
51.70%
2nd-Hit Daze Multiplier
51.70%
3rd-Hit DMG Multiplier
50.10%
3rd-Hit Daze Multiplier
50.10%
Core

EX Special Attack: Clearance Time

With enough energy, press to activate. Launches a powerful piercing attack in a straight line, dealing massive Physical DMG. Character is invulnerable while using this skill.

Lv. 1
DMG Multiplier
543.80%
Daze Multiplier
439.50%
Energy Cost
60
Core

Chain Attack: Starlight Mirage

When a Chain Attack is triggered, select the character to activate. Unleashes a powerful piercing attack at surrounding enemies in a large area, dealing massive Physical DMG. Character is invulnerable while using this skill.

Lv. 1
DMG Multiplier
735.20%
Daze Multiplier
196.60%
Core

Ultimate: Starlight Sparkle

When Decibel Rating is at Maximum, press to activate. Unleashes a powerful piercing attack at surrounding enemies in a large area, dealing massive Physical DMG. Character is invulnerable while using this skill.

Lv. 1
DMG Multiplier
1597.70%
Daze Multiplier
190.60%
Core

Quick Assist: Power of Teamwork

When the on-field character is launched, press to activate. Launches a piercing attack at enemies in front, dealing Physical DMG. Character is invulnerable during the attack.

Lv. 1
DMG Multiplier
93.40%
Daze Multiplier
93.40%
Core

Evasive Assist: Flash Spin

When the character on field is about to be attacked, press to activate. Dodges the enemy's attack and activates Vital View. Character is invulnerable while using this skill.
Core

Assist Follow-Up: Fatal Shot

Press after an Evasive Assist to activate. Pierce enemies in a large area in front, dealing Physical DMG. Character is invulnerable while using this skill.

Lv. 1
DMG Multiplier
388.80%
Daze Multiplier
341.20%
Mindscapes
M1

Dazzling Entrance

Mindscape 1

When Billy hits an enemy with a Dash Attack or Dodge Counter, he gains an additional 2.7 Energy. Can trigger once every 5s.
M2

Roaming Gunslinger

Mindscape 2

Billy's Dodge Counter DMG increases by 25%. Rolling Shots during his Basic Attacks count as dodges, making Billy Invulnerable during skill activation and able to trigger Perfect Dodges. When a Rolling Shot triggers a Perfect Dodge, it will automatically follow up a Dodge Counter.
M3

Teachings of the Starlight Knights

Mindscape 3

Basic Attack, Assist, Dodge, Special Attack, and Chain Attack Lv. +2
M4

Starlight Ballistics

Mindscape 4

When Billy hits an enemy with his EX Special Attack, the skill's CRIT Rate increases based on the distance from the enemy. The closer he is to the target, the greater the effect, up to a maximum increase of 32%.
M5

Lost Technological Construct

Mindscape 5

Basic Attack, Assist, Dodge, Special Attack, and Chain Attack Lv. +2
M6

Starlight Hero

Mindscape 6

When Billy accumulates 10 hits on enemies or triggers a Perfect Dodge, his DMG increases by 6%, stacking up to 5 times. The effect resets is he is knocked back or launched by an enemy.
Stats (Level 60)

Billy Stats at level 60 (including Core passive bonuses).

Stat
HP
6907
Stat
DEF
607
Stat
ATK
787
Stat
CRIT Rate
19.4%
Stat
CRIT DMG
50%
Stat
PEN Ratio
0%
Stat
Impact
91
Stat
Anomaly Mastery
91
Anomaly Proficiency
92
Stat
Energy Regen
1.2
Voice Actors
ENG
-
JPN
Hayashi Yū (林勇)
CN
Chen Runqiu (陈润秋)
KR
-
Gallery

Billy images aren't available yet. They will be added soon!

Review

Pros & Cons
Pros

  • Is Free!

  • Has a very mobile playstyle - the highest among all A-rank characters currently.

  • Chain Attack, Dash Attack, Ultimate, and even Billy’s EX when lined up correctly all hit multiple enemies within a generous range making him good at taking out groups of small enemies.

  • Easy to understand and play kit makes unlocking his full potential for any player incredibly easy.

  • Biggest Starlight Knight Fan.

Cons

  • Incredibly limited potential teammates he shares a faction or elemental synergy with.

  • Outside of other Physical DPS who he’ll need to compete with field time for on. Anby and Nicole are his only non-DPS Element/Faction synergies who don’t take up said field time and even then, they aren’t perfect fits for Billy’s playstyle as a Ranged Physical DPS.

  • Competes with many other A-Rank Physical DPS.

Review

Billy review isn't available yet. It will be added soon!

Ratings

This tier list assesses characters based on their combat potential in Zenless Zone Zero’s current most demanding content, Shiyu Defense (SD). SD is a mode similar to Genshin Impact’s Spiral Abyss or Honkai Star Rail’s Memory of Chaos and requires multiple teams, Disk Drives and good W-Engines. This mode offers a reasonable mix of Boss encounters (single target) and Elite packs (2-3 targets), allowing multiple characters to find a niche but in the end, there is a bias toward single target focused characters at the top-end and tier list ratings will reflect that.

Please keep in mind Zenless Zone Zero is a skill-based game and each character has a different playstyle, difficulty level and even special tricks and combos. Zenless Zone Zero is also a team based game and it's only by combining both these factors to the highest level a character can reach optimal performance.

T3

Shiyu Defense

Build and teams

Best W-Engines

The W-Engines are listed in order of priority. Sometimes the percentages appearing near them won't reflect their performance as pure damage or Stun output isn't the only thing we're looking at - the utility of the W-Engine might be more important than the calculations imply.

100%

Increases the equipper's Physical DMG by 36/41/46.5/52/57.5% for 8s upon hitting an enemy at least 6 meters away with a Basic Attack or Dash Attack.

Base ATK (Lv 60): 624
ATK (Lv 60): 25%
Billy's Signature W-Engine an excellent option for ranged Physical DMG Combat characters. Grants 25% Standard ATK unconditionally and an incredibly accessible combat buff that can be kept active permanently for ranged characters. Upon hitting an enemy while at least 6 meters away with a Basic or Dash Attack the wearer gains a buff granting 57.5% Physical DMG for 8 seconds. The size of this buff and the fact it is permanently and easily maintainable makes it easily one of the top options for all ranged Physical Combat characters.

100.59%

Increases Physical DMG by 20/25/30/35/40%. The equipper's DMG increases by 25/31.5/38/44/50% when attacking the enemy from behind.

Base ATK (Lv 60): 684
Crit Rate (Lv 60): 24%
Nekomata's Signature W-Engine - a strong option for Physical Attack Agents and also a usable option for others but with the requirement for both being that the player must actively aim to attack from behind targets wherever possible in order to get good performance compared to alternatives. Grants 24% CRIT Rate and 20% Physical DMG unconditionally but also an additional bonus to the wearer when hitting enemies from behind granting a further 25% generic DMG increase. This W-engine is a top choice without even considering the conditional behind bonus but only becomes even stronger with it. For non-Physical agents this W-engine is only competitive if you can attack from behind at least 50% or more of the time - especially with your highest value abilities like your Ultimate. This W-engines rating assume's you'll achieve 50% uptime on the behind bonus, if you can't you should consider its rating lower.

87.09%

Launching a Dodge Counter or Quick Assist increases the equipper's ATK by 12/13.8/15.6/17.4/19.2% for 12s.

Base ATK (Lv 60): 594
Attack (Lv 60): 25%
A solid all-around Free To Play accessible option for all Attack Agents. Grants 25% unconditional Standard Attack and a further 19.2% (At S5) Combat Attack buff after performing a Dodge Counter or Quick Assist lasting 12 seconds. This buff is reasonably easy for all Attack Agents to achieve in both their standard and burst rotations, assuming a Support character is present on the team. When executing your standard rotation ensure you weave in at least 1 Dodge Counter every 12 seconds and when executing your burst rotation, ensure your Support is the last Chain Attack in the sequence so you can perform a Quick Assist right after and proceed into your burst combo during the enemy stun window.

85.15%

Increases ATK by 7.5/8.6/9.7/10.8/12%. Attacks that land a CRIT on an enemy will inflict an additional 200% of ATK as DMG. This effect can only be triggered once every 8/7.5/7/6.5/6s.

Base ATK (Lv 60): 594
Crit Rate (Lv 60): 20%
The Combat battle pass W-engine - an expensive engine to acquire which while incredibly consistent still only performs similarly to other W-Engine's with similar investment. At S5 grants 20% CRIT Rate and 12% Combat Attack unconditionally with an additional effect that triggers when the wearer lands a CRIT on an enemy. This additional effect will deal damage equal to 200% of the wearers ATK to the target hit with a cooldown of 6 seconds (at S5). The catch with this activated ability is that the damage is Physical and cannot CRIT meaning for non-physical characters you'll be losing all elemental DMG% boosts on this damage and for all characters not CRITing is a big downside making the damage from this unimpactful. Cannon Rotor's abilities will always be active without you having to do anything at all in both standard and burst rotations but it has little to no edge over W-engines outside of that making it a steep investment just for that consistency.

85.27%

Whenever a squad member launches a Chain Attack, the equipper gains a Charge stack, stacking up to 3 times. Upon activating their own Ultimate, the equipper consumes all Charge stacks, and each stack increases the skill's DMG by 15/17.2/19.5/21.7/24%.

Base ATK (Lv 60): 594
Attack (Lv 60): 25%
A decent but somewhat niche Free To Play accessible option for all Attack Agents. Grants 25% unconditional Standard Attack and has an additional effect that grants the wearer a Charge every time any squad member performs a Chain Attack with a limit of 3. Each Charge will grant the wearer 24% increased ultimate DMG (at S5) and after an Ultimate is performed all Charges will be consumed. Against bosses you can guarantee 3 Chain Attacks every time you Stun them, meaning this W-engine's effect essentially grants 72% Ultimate damage. These bonuses allow it to be a competitive option during burst rotations with the ultimate available, but when the ultimate isn't available or executing a standard rotation this W-engine falls behind.
Best Disk Drives Sets

100%

(2)
CRIT Rate +8%.
(4)
Triggering a critical hit with a Basic Attack, Dodge Counter or EX Special Attack increases the equippers ATK by 9% for 6s. The buff duration for different skills are calculated separately.

Great option for all direct damage dealers that make use of some form of Basic ATK and EX frequently. The set grants 8% permanent CRIT RATE% from the 2-PC and a 9% increased combat ATK% buff for 6 seconds when triggering a CRIT with each a Basic Attack, Dodge Counter or EX Special Attack from the 4P. Each buff belongs to an attack type so you'll need to CRIT with each type every 6 seconds to maintain 3 stacks. You can expect 2 stacks of this set most of the time one from basics and one from either EX's during a burst window or Dodge Counters during downtime granting 18% combat ATK% that multiplies all ATK stats like FLAT ATK and ATK% ((Base ATK * (1 + ATK%)) + Flat ATK) * (1 + Combat ATK%).

Despite all this, the set has ramp-up time and can quickly fall off without access to energy for EX's making it most suitable for characters with cheap EX's, frequent Dodge Counters or concentrated burst damage windows.

This options becomes much stronger once you reach M2 on Billy!

Best combined with your choice of 2-PC Set:

  • Puffer Electro (Recommended)
  • Hormone Punk
  • Fanged Metal

101.08%

(2)
PEN Ratio +8%.
(4)
Ultimate DMG increases by 20%. Launching an Ultimate increases the equippers ATK by 15% for 12s.

A top option for burst damage characters aiming to deal most of their damage in a short window following their Ultimate. The set grants 8% permanent PEN Ratio% from the 2-PC, 15% increased combat ATK% for 12 seconds after using an Ultimate and 20% increased Ultimate DMG from the 4P. When evaluating this set we assume you'll gain and save your damaging Ultimate for the enemy Stun window and use it before executing the rest of your combo. If you're unable to gain your Ultimate every stun window, this sets value will drop compared to its listing.

Best combined with your choice of 2-PC Set:

  • Woodpecker Electro (Recommended)
  • Hormone Punk
  • Fanged Metal

99.85%

(2)
Physical DMG +10%.
(4)
Whenever a squad member inflicts Assault on an enemy, the equipper deals 35% increased damage to the target for 12s.

Competitive option for direct and Anomaly-based Physical damage dealers granting 10% permanent Physical DMG% from the 2-PC and 35% increased DMG against enemies inflicted by Assault by any party member for 12 seconds. DMG% bonus against enemies will be up the majority of most fights against boss-type enemies thanks to its long duration and ability to trigger from any team member allowing a Physical based Bangboo/teammate to assist with uptime via their own Assaults.

Best combined with your choice of 2-PC Set:

  • Woodpecker Electro (Recommended)
  • Hormone Punk
  • Puffer Electro
Best Disk Drives Stats
Disk 4
CRIT Rate
CRIT Rate%
=
CRIT DMG
CRIT DMG%
Disk 5
Physical DMG
Physical DMG%
>=
ATK%
ATK%
Disk 6
ATK%
ATK%

Substats: CRIT RATE = CRIT DMG > ATK% > PEN = ATK

Best Endgame Stats (Level 60)
  • ATK: 2400-2800+

  • HP: 9000+

  • DEF: 800+

  • CRIT RATE: 70-80%

  • CRIT DMG: 140-160%+

Skill priority
Core

Chain Attack

Core

Special Attack

Core

Basic Attack

Core

Assist

Core

Dodge

Video guides

Rotation & Teams

Synergy

Billy’s biggest issue is his lack of access to good synergizing supportive options, especially ones that can enable his Additional Ability if possible. Fortunately for Billy, while there aren’t any Physical supports in 1.0, Nicole is a support who shares a faction with Billy, allowing them both to activate their Additional Abilities with each others help. Nicole also offers Billy other benefits - primarily through her excellent DEF Shredding debuff capabilities. Nicole’s DEF Shred is a great damage amplification tool but due to its low duration it should be deployed before Billy intends to execute burst damage and if possible weaved in between the teams rotation frequently to keep it active as much as possible.

As a Physical DPS Billy has very little access to Supportive Physical options with the other 3 Physical characters on release all being fellow DPS that take up much of the field time Billy would prefer for himself. Pairing Billy with Anby grants him access to his Additional Ability which provides his entire team solid amount of Daze through parries and EX’s, allowing him to run exactly the Supporters he wants.

Teams

If a column has multiple characters, the bigger one is the priority choice for the team while the smaller ones are alternatives. If they are the same size, either of them can be used.

Billy Hyper Team

Caesar
Caesar
Qingyi
Qingyi
Anby
Anby
Stun
Nicole
Nicole
Lucy
Lucy
Soukaku
Soukaku
Support

Bangboo options:

  • Amillion - if 2x Cunning Hares,
  • Red Moccus - if playing Caesar and Lucy,
  • Bagboo or Boolseye - F2P option,
  • Knightboo - generic option if nothing else applies.

Calculations

Damage output

Important!

  • Billy's Mindscape 1 doesn't directly increase his burst damage output but does increase his ability to gain his EX Special attack's allowing him more consistent access to his maximum potential rotation or the potential to use EX's outside the enemy stun window.
  • Billy's Mindscape 2 is incredibly valuable, just not to his burst damage rotation. This Mindscape introduces more opportunities while the enemy isn't stunned to perform dodge counters while also increasing the damage of those counters.
  • Billy's Mindscape 6 relies on the skill of the user in order to achieve the results displayed below. If you get knocked back or launched the value of this Mindscape drops dramatically compared to what is displayed (it assumes you'll maintain the buff without mistakes).
Billy Kid in 1 Target scenario - Burst

Rotation time: 13.25s for Burst

Details about the calculations

Here are the rotations used in the calculations.

It's imperative that before executing Billy's EX Special or Ultimate you first enter the Crouching Fire state to gain the massive damage boost from his Core Passive, without it Billy loses much of his potential damage. Billy is capable of dealing a large amount of his total damage potential in a very short period of time, the rotation listed below can be shortened to end right after his ultimate if higher DPS is desired and other characters can make use of the remaining enemy stun timer.

Burst rotation (During Stun)
  • Chain Attack: Starlight Mirage
  • Quick Assist: Power of Teamwork
  • Basic Attack: Full Firepower (Standing Bullets)
  • Basic Attack: Full Firepower (Crouching Fire)
  • EX Special Attack: Clearance Time (During Crouching)
  • EX Special Attack: Clearance Time (During Crouching)
  • Ultimate: Starlight Sparkle (During Crouching)
  • Basic Attack: Full Firepower (Standing Fire)
  • Basic Attack: Full Firepower (Standing Bullets)
  • Basic Attack: Full Firepower (Crouching Fire)
  • Basic Attack: Full Firepower (Crouching Bullets)
  • Basic Attack: Full Firepower (Finishing Shot)

And here are the W-Engines and Disk Drives used in the calculations.

Increases the equipper's Physical DMG by 36/41/46.5/52/57.5% for 8s upon hitting an enemy at least 6 meters away with a Basic Attack or Dash Attack.

Base ATK (Lv 60): 624
ATK (Lv 60): 25%

(2)
CRIT Rate +8%.
(4)
Triggering a critical hit with a Basic Attack, Dodge Counter or EX Special Attack increases the equippers ATK by 9% for 6s. The buff duration for different skills are calculated separately.

(2)
Physical DMG +10%.
(4)
Whenever a squad member inflicts Assault on an enemy, the equipper deals 35% increased damage to the target for 12s.
Disk 4
CRIT DMG
CRIT DMG%
Disk 5
ATK%
ATK%
Disk 6
ATK%
ATK%

Substats: ATK (18%), CRIT Rate (33.6%), CRIT DMG (67.2%)

Shiyu Defense

Shiyu Defense

This section contains information about Billy performance in the latest Shiyu Defense cycle (1.3.2). The page will be automatically updated every patch once enough data is gathered.

  • The data has been last updated on 06/12/2024,
  • 4890 players shared their 1.3.2 Shiyu Defense clear data with us (1093 of the sample are self-reported players that filled our form, 3797 are from random UIDs that we scanned).

If you want to share your clear information with us, you simply need to fill the form below and provide us with your UID and make your Hoyo profile public - we will automatically parse the Shiyu Defense clear information from your profile after that!

Shiyu Defense Stats Form
Usage rate

Characters are ranked with appearance rate, which is how often a character was used in Shiyu Defense by the players who we have scanned, regardless of whether they own the character or not. Ownership rate currently cannot be obtained.

Common partners

This section lists the characters that were most commonly paired with Billy in the current phase of Shiyu Defense.

Teams

This section lists most popular teams featuring Billy in the current phase of Shiyu Defense.

Rank 81

App. rate: 0.27%

Avg. Score 2.78

Billy
Nicole
Caesar

Rank 101

App. rate: 0.19%

Avg. Score 3

Billy
Anby
Nicole

Rank 101

App. rate: 0.19%

Avg. Score 2.8

Billy
Qingyi
Nicole

Rank 111

App. rate: 0.16%

Avg. Score 3

Billy
Lucy
Caesar

Rank 156

App. rate: 0.08%

Avg. Score 2.67

Billy
Anby
Soukaku

Rank 184

App. rate: 0.05%

Avg. Score 2.5

Billy
Qingyi
Caesar

Rank 235

App. rate: 0.03%

Avg. Score 1

Billy
Anton
Qingyi
Mindscapes

Mindscapes data comes from 45 players we have scanned who used Billy in the current Shiyu Defense.

2.22%

3 score

Mindscape 0

2.22%

2 score

When Billy hits an enemy with a Dash Attack or Dodge Counter, he gains an additional 2.7 Energy. Can trigger once every 5s.

2.22%

3 score

Billy's Dodge Counter DMG increases by 25%. Rolling Shots during his Basic Attacks count as dodges, making Billy Invulnerable during skill activation and able to trigger Perfect Dodges. When a Rolling Shot triggers a Perfect Dodge, it will automatically follow up a Dodge Counter.

0%

No score

Basic Attack, Assist, Dodge, Special Attack, and Chain Attack Lv. +2

2.22%

No score

When Billy hits an enemy with his EX Special Attack, the skill's CRIT Rate increases based on the distance from the enemy. The closer he is to the target, the greater the effect, up to a maximum increase of 32%.

13.33%

2.83 score

Basic Attack, Assist, Dodge, Special Attack, and Chain Attack Lv. +2

77.78%

2.77 score

When Billy accumulates 10 hits on enemies or triggers a Perfect Dodge, his DMG increases by 6%, stacking up to 5 times. The effect resets is he is knocked back or launched by an enemy.
W-Engines

W-Engines usage data comes from 45 players we have scanned who used Billy in the current Shiyu Defense.

57.78%

2.7 score

Increases the equipper's Physical DMG by 36/41/46.5/52/57.5% for 8s upon hitting an enemy at least 6 meters away with a Basic Attack or Dash Attack.

Base ATK (Lv 60): 624
ATK (Lv 60): 25%

13.33%

3 score

Upon hitting an enemy with a Basic Attack, Dash Attack, or Dodge Counter, the equipper's ATK increases by 3.5/4.4/5.2/6/7% for 8s, stacking up to 8 times. This effect can trigger once every 0.5s. The duration of each stack is calculated separately.

Base ATK (Lv 60): 684
Attack (Lv 60): 30%

11.11%

2.5 score

Increases Physical DMG by 20/25/30/35/40%. The equipper's DMG increases by 25/31.5/38/44/50% when attacking the enemy from behind.

Base ATK (Lv 60): 684
Crit Rate (Lv 60): 24%

6.67%

2.33 score

Launching a Dodge Counter or Quick Assist increases the equipper's ATK by 12/13.8/15.6/17.4/19.2% for 12s.

Base ATK (Lv 60): 594
Attack (Lv 60): 25%

6.67%

3 score

Whenever a squad member launches a Chain Attack, the equipper gains a Charge stack, stacking up to 3 times. Upon activating their own Ultimate, the equipper consumes all Charge stacks, and each stack increases the skill's DMG by 15/17.2/19.5/21.7/24%.

Base ATK (Lv 60): 594
Attack (Lv 60): 25%
Disk Drives

Disk Drives usage data comes from 45 players we have scanned who used Billy in the current Shiyu Defense.

33.33%

2.8 score

(2)
CRIT Rate +8%.
(4)
Triggering a critical hit with a Basic Attack, Dodge Counter or EX Special Attack increases the equippers ATK by 9% for 6s. The buff duration for different skills are calculated separately.

(2)
Physical DMG +10%.
(4)
Whenever a squad member inflicts Assault on an enemy, the equipper deals 35% increased damage to the target for 12s.

13.33%

3 score

(2)
CRIT Rate +8%.
(4)
Triggering a critical hit with a Basic Attack, Dodge Counter or EX Special Attack increases the equippers ATK by 9% for 6s. The buff duration for different skills are calculated separately.

(2)
PEN Ratio +8%.
(4)
Ultimate DMG increases by 20%. Launching an Ultimate increases the equippers ATK by 15% for 12s.

13.33%

2.83 score

(2)
Physical DMG +10%.
(4)
Whenever a squad member inflicts Assault on an enemy, the equipper deals 35% increased damage to the target for 12s.

(2)
CRIT Rate +8%.
(4)
Triggering a critical hit with a Basic Attack, Dodge Counter or EX Special Attack increases the equippers ATK by 9% for 6s. The buff duration for different skills are calculated separately.

11.11%

2.4 score

(2)
CRIT Rate +8%.
(4)
Triggering a critical hit with a Basic Attack, Dodge Counter or EX Special Attack increases the equippers ATK by 9% for 6s. The buff duration for different skills are calculated separately.

(2)
ATK +10%.
(4)
Upon entering combat or switching in, its user's ATK increased by 25% for 10s. This effect can be triggered once every 20s.

11.11%

2.75 score

(2)
PEN Ratio +8%.
(4)
Ultimate DMG increases by 20%. Launching an Ultimate increases the equippers ATK by 15% for 12s.

(2)
CRIT Rate +8%.
(4)
Triggering a critical hit with a Basic Attack, Dodge Counter or EX Special Attack increases the equippers ATK by 9% for 6s. The buff duration for different skills are calculated separately.

4.44%

3 score

(2)
ATK +10%.
(4)
Upon entering combat or switching in, its user's ATK increased by 25% for 10s. This effect can be triggered once every 20s.

(2)
CRIT Rate +8%.
(4)
Triggering a critical hit with a Basic Attack, Dodge Counter or EX Special Attack increases the equippers ATK by 9% for 6s. The buff duration for different skills are calculated separately.
Stats

Billy stats aren't available yet. They will be added soon.