4 cost
CRIT DMG / CRIT Rate
3 cost
Spectro DMG
3 cost
Spectro DMG ≥ ATK%
1 cost
ATK%
1 cost
ATK%
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Last updated: 09/June/2026
Best guide and build for Lucy from WW (Wuthering Waves). Lucy is a 5★ rarity character from the 
Spectro element who uses the Pistols type weapon.
Lucy has at least one video guide available:
Last review update
Patch 3.4
Last major build/calcs update
Patch 3.4
Last profile update*
09/June/2026
*Profile update means smaller edits to echoes, stats, synergies or teams that don't require new calculations.
To learn more about Lucy check the sections below. Use the tabs to quickly switch to the kind of information you're looking for.
Profile
Basic Attack - Locked Thread
Basic Attack
Perform up to 4 consecutive attacks, dealing Spectro DMG.
Hold Normal Attack right after Basic Attack Stage 1 to continuously attack the targets, dealing Spectro DMG. Hold this skill for a certain amount of time to cast Heavy Attack Stage 1.
Hold Normal Attack shortly after Basic Attack Stage 3 lands to cast Heavy Attack Stage 2.
Heavy Attack
Consume STA to lash out against the enemies with Monowire, dealing Spectro DMG.
Hold Normal Attack after Heavy Attack Stage 1 lands to cast Heavy Attack Stage 2, dealing Spectro DMG.
Press Normal Attack shortly after casting Heavy Attack Stage 1 to cast Basic Attack Stage 3.
Mid-air Attack
Consume STA to perform a Plunging Attack, dealing Spectro DMG.
Press Normal Attack shortly after casting this skill to cast Basic Attack Stage 2.
Dodge Counter
Press Normal Attack shortly after a successful Dodge to attack the target, dealing Spectro DMG.
Press Normal Attack shortly after casting this skill to cast Basic Attack Stage 4.
Hold Normal Attack shortly after this skill lands to cast Heavy Attack Stage 2.
Basic Attack - Thread Shredding
When in Algorithm Compaction, Lucy's Basic Attack is replaced with Basic Attack - Thread Shredding.
Perform up to 4 consecutive attacks, dealing Spectro DMG, considered Heavy Attack DMG.
Heavy Attack - Single Threading
When in Algorithm Compaction, Lucy's Heavy Attack is replaced with Heavy Attack - Single Threading.
Consume STA to attack the target, dealing Spectro DMG.
Press Normal Attack shortly after casting this skill while airborne to cast Mid-air Attack - Algorithm Compaction.
Press Normal Attack shortly after casting this skill while on the ground to cast Basic Attack - Thread Shredding Stage 2.
Heavy Attack - Dual Threading
When in Algorithm Compaction and Root Access reaches 100 points, Heavy Attack - Single Threading is replaced with Heavy Attack - Dual Threading.
Consume STA and all Root Access to attack the target, dealing Spectro DMG.
Press Normal Attack shortly after casting this skill while airborne to cast Heavy Attack - Multi-threading.
Press Normal Attack shortly after casting this skill while on the ground to cast Basic Attack - Thread Shredding Stage 2.
Heavy Attack - Multi-threading
Consume STA to attack the target, dealing Spectro DMG and inflicting Hack - Shifting on the target. SQL can be consumed for a 270% increase in this attack's DMG Multiplier.
Press Normal Attack shortly after casting this skill to cast Basic Attack - Thread Shredding Stage 2.
Mid-air Attack - Algorithm Compaction
When in Algorithm Compaction, Mid-air Attack is replaced with Mid-air Attack - Algorithm Compaction.
Consume STA to perform a Plunging Attack, dealing Spectro DMG.
Press Normal Attack shortly after casting this skill to cast Basic Attack - Thread Shredding Stage 2.
Dodge Counter - Algorithm Compaction
When in Algorithm Compaction, Dodge Counter is replaced with Dodge Counter - Algorithm Compaction.
Press Normal Attack shortly after a successful Dodge to attack the target, dealing Spectro DMG.
Press Normal Attack shortly after casting this skill to cast Basic Attack - Thread Shredding Stage 3.
Protocol Breach
Resonance Skill - Payload
Cast Resonance Skill - Payload to charge forward, dealing Spectro DMG and inflicting Hack - Shifting. Upon hitting the target, a follow-up attack is automatically triggered, dealing Spectro DMG and activating Resonance Skill - Pulse Interference. If no target is hit during the charge, reduce the skill CD by 70%. If the charge is interrupted or not successfully cast, the skill CD is not reduced.
Press Normal Attack shortly after the follow-up attack to cast Basic Attack Stage 2.
Hold Normal Attack shortly after follow-up attack lands to cast Heavy Attack Stage 2.
Resonance Skill - Pulse Interference
Cast Resonance Skill - Pulse Interference to cut through the target, dealing Spectro DMG and briefly Stagnating the target, before granting Digital Handshake.
Digital Handshake: When Lucy is not in Algorithm Compaction and is the active Resonator in the team, she gains TCP every second. This effect is removed when TCP reaches 100 points or when Resonance Liberation - Netrunner or Resonance Liberation - Old Net Deep Dive is cast.
Press Normal Attack shortly after casting this skill to cast Basic Attack Stage 2.
Resonance Skill - Deadlock
When TCP reaches 100 points or Lucy is in Algorithm Compaction, Resonance Skill - Payload and Resonance Skill - Pulse Interference are replaced with Resonance Skill - Deadlock.
Cast Resonance Skill - Deadlock to attack the target, dealing Spectro DMG and inflicting Hack - Shifting, considered Heavy Attack DMG.
Press Normal Attack shortly after casting this skill to cast Basic Attack - Thread Shredding Stage 2.
Reset the CD of Resonance Skill - Deadlock after casting Resonance Liberation - Netrunner or Resonance Liberation - Old Net Deep Dive.
Netrunner
Resonance Liberation - Netrunner
Lucy deep dives into cyberspace and pulls up the Protocol Interface for 10s. While the Protocol Interface is active, choose up to 7 different Spoofing Program effects, each requiring different RAM costs. Lucy starts with 24 points of RAM.
While in the Protocol Interface, Lucy marks targets within a certain range in her view. Marked targets will be applied with all Spoofing Program effects selected afterwards. Adjust Lucy's view to mark more targets. When no target is in view, no Spoofing Program can be applied.
While in the Protocol Interface, when either the duration expires or when Normal Attack is held down, Override is triggered, which deals Spectro DMG to all marked targets before closing the Protocol Interface, considered Heavy Attack DMG. When RAM runs out or is insufficient to activate any Spoofing Programs, press Normal Attack to trigger Override on all marked targets.
Can be cast in mid-air close to the ground.
Spoofing Program: Ping
Requires 2 RAM. Extends field of view. Lucy marks and deals Spectro DMG to all nearby targets within the effective range without having to adjust the view, considered Heavy Attack DMG.
Spoofing Program: Cyberware Malfunction
Requires 4 RAM. Marked targets take 5% more DMG for 30s.
Spoofing Program: Breach Protocol
Requires 4 RAM. Marked targets' DEF is reduced by 5% for 30s.
Spoofing Program: Synapse Burnout
Requires 5 RAM. Deals Spectro DMG to all marked targets within a certain range, considered Heavy Attack DMG.
Spoofing Program: Cripple Movement
Requires 6 RAM. Deals Hack DMG to all marked targets and reduces their ATK by 5% for 30s.
Spoofing Program: Weapon Glitch
Requires 5 RAM. Causes all marked targets' attacks to have a chance to be nullified for 30s.
Spoofing Program: Cyberpsychosis
Requires 6 RAM. Convert all marked targets to neutral units and reduce their Vibration Strength. Only effective against Common Class enemies.
Resonance Liberation - Old Net Deep Dive
When in Algorithm Compaction, after Heavy Attack - Multi-threading is cast, Resonance Liberation - Netrunner is replaced with Resonance Liberation - Old Net Deep Dive. Lucy gains all effects of Resonance Liberation - Netrunner, and the DMG Multiplier of Override is greatly increased.
After casting Resonance Liberation - Old Net Deep Dive, or when Lucy exits the Algorithm Compaction state, Resonance Liberation - Old Net Deep Dive is replaced with Resonance Liberation - Netrunner.
Can be cast in mid-air close to the ground.
Depths of Blackwall
Cloud Portal
When not in Algorithm Compaction, Lucy gains TCP upon hitting a target. At 100 points of TCP, Resonance Skill - Payload and Resonance Skill - Pulse Interference are replaced with Resonance Skill - Deadlock.
Casting Resonance Liberation - Netrunner or Resonance Liberation - Old Net Deep Dive clears all TCP.
Algorithm Compaction
After casting Resonance Skill - Deadlock, Lucy enters Algorithm Compaction and gains 1 stack of SQL. Her Basic Attack is replaced with Basic Attack - Thread Shredding, and Heavy Attack is replaced with Heavy Attack - Single Threading. Lucy's Spectro DMG Bonus is increased by 65% for 8s.
While in Algorithm Compaction, casting Resonance Skill - Deadlock again will not grant SQL and Spectro DMG Bonus repetitively.
When in Algorithm Compaction, Lucy gains Root Access upon hitting a target with attacks including Basic Attack - Thread Shredding and Heavy Attack - Single Threading. Reaching 100 points of Root Access replaces Heavy Attack - Single Threading with Heavy Attack - Dual Threading. Press or hold Normal Attack shortly after casting Heavy Attack - Dual Threading to cast Heavy Attack - Multi-threading.
When casting Heavy Attack - Multi-threading, if Lucy has SQL, increase this attack's DMG Multiplier by 270% and remove SQL.
When casting Heavy Attack - Multi-threading, if Lucy does not have SQL, she loses 20% of current HP. If Lucy's HP is below 1%, no HP is consumed.
After casting Heavy Attack - Multi-threading, Resonance Liberation - Netrunner is replaced with Resonance Liberation - Old Net Deep Dive.
After casting Resonance Liberation, or if no attacks are performed within 8s after casting Heavy Attack - Multi-threading, Lucy exits the Algorithm Compaction state.
Hack Response - Data Crash
Lucy deals Spectro DMG to a target inflicted with Hack - Interfered and applies the same target with Data Crash, considered Hack DMG.
Data Crash: After the target deals damage, Stagnate the target for 0.5s.
TCP
Lucy holds up to 100 points of TCP.
Lucy gains TCP when she deals damage through Basic Attack, Heavy Attack, Mid-air Attack, Dodge Counter.
Lucy gains TCP when she deals damage through Resonance Skill - Payload and Resonance Skill - Pulse Interference.
After casting Intro Skill - Outdated Hallucination, casting the next Resonance Skill - Pulse Interference additionally grants 20 points of TCP.
Root Access
Lucy holds up to 100 points of Root Access.
Lucy gains Root Access when she deals damage through Basic Attack - Thread Shredding, Heavy Attack - Single Threading, Heavy Attack - Dual Threading , Heavy Attack - Multi-Threading, Mid-air Attack - Algorithm Compaction, Dodge Counter - Algorithm Compaction.
Data Crash
When the target's Off-Tune Level is full, Lucy can cast Tune Break on the target.
Responding to Hack - Interfered: when Resonators in the team trigger Tune Break on the target and cause them to be affected by Hack - Interfered, Lucy applies Hack Response - Data Crash on the target. Each target can be inflicted with this effect up to 1 time every 8s.
Ghost Cyberware
When Lucy is the active Resonator in the team, if she takes no damage for 8s, she gains 1 stack of Optical Illusion. Max 1 stack by default.
Optical Illusion: When attacked, reduce this instance of DMG by 100%. If Lucy is hit or launched from the attack, she immediately recovers and triggers a successful Dodge if she's on the ground. After this effect is triggered, remove 1 stack of Optical Illusion.
Function Cracking
When Resonance Skill - Payload, Resonance Skill - Pulse Interference, or Resonance Skill - Deadlock hits an Overlord Class or Calamity Class enemy, Lucy applies Botnet Mark on them for 2 min. While Botnet Mark is active, when a Resonator in the team defeats that target with direct damage, Lucy gains the Network Backdoor effect. If Rebecca is in the team, she gains the same effect.
Network Backdoor: Grants 10% All DMG Amplification and 10% additional Hack DMG Multiplier. This effect lasts for 2 min and stacks up to 2 times. Gaining this effect again resets its duration. At 2 stacks, additionally increases All DMG Amplification by 5% and Hack DMG Multiplier by 5%. When Lucy is downed, she can no longer gain Network Backdoor, and any existing Network Backdoor effects become invalid.
Outdated Hallucination
Attack the target, dealing Spectro DMG and granting Resonators in the team Involuntary Sharing, allowing them to see targets behind obstacles for 25s. Additionally, Involuntary Sharing is enhanced on Rebecca, allowing her to lock onto targets behind obstacles. If Rebecca's turret is on the field, its Overload effect is activated, increasing its DMG dealt for 4s.
If Lucy is not in Algorithm Compaction after casting this skill, press Normal Attack within a certain time to cast Basic Attack Stage 2.
If Lucy is in Algorithm Compaction after casting this skill, press Normal Attack within a certain time to cast Basic Attack - Thread Shredding Stage 2.
After casting this skill, the next Resonance Skill - Pulse Interference additionally grants 20 points of TCP.
Countermeasure Program
The incoming Resonator gains 25% Basic Attack DMG Amplification for 14s or until they are switched out.
Grants all Resonators in the team Countermeasure Program for 25s.
While the effect is active, when an active Resonator in the team other than Lucy inflicts Hack - Shifting, that Resonator gains 20% All DMG Amplification.
While the effect is active, when a Resonator in the team other than Lucy is attacked, Lucy grants them 30% DMG Reduction for 3s and Stagnates their attacker for 1s. This effect can only trigger up to 1 time while Countermeasure Program is active. Obtaining Countermeasure Program again resets the effective charge.
When the All DMG Amplification is effective, switching to another Resonator ends the Countermeasure Program early.
The Moon, a Ticket, and a Dream
Lucy is now immune to interruptions while casting Resonance Skill - Payload, Resonance Skill - Pulse Inteference, Heavy Attack - Dual Threading, and Heavy Attack - Multi-Threading
Casting Intro Skill - Outdated Hallucination increases ATK by 20% for 14s.
When a Resonator in the team defeats a target affected by Spoofing Program with direct damage, Lucy records the effect triggered and activates the corresponding Quick Action on that Resonator for 6s. The record expires when Lucy is knocked out.
Quick Action: When activated, inflict the recorded Spoofing Program effects on targets within 3m from the active Resonator in the team, effective once only on each target.
The following Spoofing Program effects can be recorded: Spoofing Program: Cyberware Malfunction, Spoofing Program: Breach Protocol, Spoofing Program: Cripple Movement, Spoofing Program: Weapon Glitch, and Spoofing Program: Cyberpsychosis. When applying Spoofing Program effects via Quick Action, only the continuous status effects are applied.
The Blackwall, the Past, the Escape
While casting Resonance Liberation - Netrunner and Resonance Liberation - Old Net Deep Dive, Lucy's starting RAM is increased to 32.
After casting Resonance Skill - Pulse Interference, deal 1 additional instance of Spectro DMG equal to 450% of Lucy's ATK, considered Heavy Attack DMG.
When this instance of damage hits the target, apply all of the following Spoofing Program effects: Spoofing Program: Cyberware Malfunction,
Spoofing Program: Breach Protocol, Spoofing Program: Cripple Movement, Spoofing Program: Weapon Glitch, and Spoofing Program: Cyberpsychosis. Only the continuous status effects are applied.
Forte Circuit - Depths of Blackwall is enhanced: When casting Heavy Attack - Multi-threading, if Lucy has SQL, the DMG Multiplier increase is raised from 270% to 560%.
Cyberpunk
The Override DMG Multiplier of Resonance Liberation - Netrunner and Resonance Liberation - Old Net Deep Dive is increased by 50%, and their Crit. DMG is increased by 100%.
The DMG Multiplier of Spoofing Program: Cripple Movement is increased by 65%.
The DMG Multiplier of Hack Response - Data Crash is increased by 65%.
No Living Legends in Night City
When Resonators in the team inflict Hack - Shifting, Resonators in the team gain 20% All-Attribute DMG Bonus for 20s.
A Broken Path to Hell
The stack limit of Optical Illusion obtainable via Inherent Skill - Ghost Cyberware is increased to 2.
Inherent Skill - Ghost Cyberware is now enhanced: When Lucy's HP falls below 50%, she immediately gains 1 stack of Optical Illusion upon being hit. This effect has a Cooldown of 180s. When Optical Illusion is triggered, Lucy gains a Shield equal to 150% of ATK for 10s.
I Really Want to Stay At Your House
Targets with Hack - Shifting or in the Hack - Interfered state take 40% increased Heavy Attack DMG from Lucy.
Targets with Hack - Shifting or in the Hack - Interfered state take 60% increased Hack DMG from Lucy.
The Stagnation triggered by Hack Response - Data Crash now lasts for 1.5s.
Lucy Minor Fortes information aren't available yet.
Stats data not available for this character.
Lucy upgrade material information aren't available yet.
Review
Please keep in mind Wuthering Waves is a skill-based game and each character has a different playstyle, difficulty level and even special tricks and combos. Wuthering Waves 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.
Accessible - has a free best-in-slot buffer and can use multiple generalist Supports to great effect, all of them not needing their Signature to perform near maximum level.
High Sequence value; S1 increases her Whimpering Wastes potential substantially, plus S2-S3 can increase her longevity across all game modes by a lot.
Has a lower damage ceiling than every modern release before her (about equivalent to a late 2.x character).
Pretty Signature weapon-dependent to perform at a standard modern level.
Second Inherent Skill (which can boost her damage a lot) will almost never activate aside from very specific conditions (early Matrix rounds, Tower 2-4).
The Hack mechanic is exclusive to the collab characters, and is a variation of Tune Rupture unable to benefit from standard Tune Rupture temporary buffs in endgame content, impacting long-term use in such scenarios.
Collab character - will likely never rerun beyond her first banner. Grab her now or miss out (most likely) forever.
Lucy is a 5-star Spectro Pistols DPS from the Cyberpunk: Edgerunners collab who relies on a mechanic called Hack (a variant of Tune Rupture) and a special Ultimate that applies various debuffs and damage to enemies. Lucy’s rotation goal will be to empower that Ultimate to deal as much damage and apply as many debuffs as possible, while also dealing some Hack damage to her targets. Her kit is intrinsically tied to her best Support, Rebecca, from the same collab, as they rely on each other to enhance their damage and make for the best team they can get.
Key Mechanics
Lucy’s main rotation focus lies in her Forte resources, being TCP and Root Access. First, she wants to charge up TCP to cast an enhanced Skill called “Deadlock” that then enables her to accumulate Root Access via newly acquired Basic Attacks. At full Root Access, she can then cast a special Heavy Attack called Dual Threading, automatically followed by Multi-threading. At this point, her Ultimate is enhanced, and she is free to cast it and switch out.
Lucy’s Ultimate is, however, very unique. It freezes all enemies in time for its duration and allows you to select 7 different programs that will debuff or deal damage to enemies depending on the program. Until S2, where all programs are always selectable, the first 5 programs are always the best ones to pick for a mix of damage and damage enhancements.
Lastly, Lucy has a unique Tune Break response, called Hack. This is functionally the same thing as Tune Rupture; the damage multipliers function in the exact same way; they’re just under a different name. Lucy will apply Hack - Shifting through various attacks on targets that, upon casting a Tune Break Skill, will receive additional Hack damage, empowering your overall damage per Tune Break Skill cast.
Rotation & Passives
Lucy’s rotation has her casting her Skills 1 and 2 (“Payload” and “Pulse Interference”) following her Intro in order to regenerate TCP passively while she is on-field after the casts and immediately activating her Signature Weapon’s passives. Afterwards, Lucy has enough TCP to cast her enhanced Skill with the help of 3 Basic Attacks. Finally, a full Basic Attack chain is enough to restore her Root Access fully, at which point she can cast her full Forte Heavy Attack, Ultimate, and swap out. No other attacks are useful in her rotation, and dodging isn’t ideal as it’ll lose time overall, so overall Lucy is unfortunately quite prone to interruption.
When it comes to her passives, they only help her consistency slightly in the case of her Inherent Skill 1 (even still, it’s quite useless), and her Inherent Skill 2 grants a nichely accessed damage-increasing mark debuff to enemies that can be granted to her and Rebecca when a boss enemy is defeated. This is particularly useful in early Matrix rounds, but may also see small benefits in Tower of Adversity 2-4, giving Lucy’s team a small extra advantage in those areas.
Meta Position & Conclusion
As a stand-alone modern mid-3.x DPS release, Lucy’s own damage ceiling isn’t impressive compared to all the DPS powerhouses released before her. Aemeath, Luuk, Sigrika, Hiyuki all significantly outperform her, as her own damage ceiling can be compared to that of Augusta or Phrolova, even in her best team with Rebecca and Mornye/Shorekeeper. All in all, while Lucy is easy to access teams-wise since she’s using a free buffer and generalist Supports, her damage ceiling is unimpressive for a modern release, but still usable. Those who enjoy Lucy as a character from Cyberpunk: Edgerunners may be satisfied with how she turned out, as she is easily serviceable, but as a modern release, for meta-only players with no attachment to Lucy, she is forgettable. Targeting the other modern 3.x teams instead may prove to be a stronger choice if meta performance is your only deciding factor.
In conclusion, while Lucy doesn’t bring much that’s new meta-wise to the table, and her long-term use cases don’t look great at S0 due to Hack being different from Tune Rupture, she is still quite a serviceable DPS character up to the late 2.x versions’ standard which can help fill out your roster, or let you play a really cool Cyberpunk: Edgerunners character. And we think that’s awesome.
Build
The percentages show the performance of the weapon based on calculations, but in some cases, some weapons might provide additional QOL that can't be quantified and it would push that weapon ahead of others in the priority (and in those cases, we would put that weapon higher).
Lucy calculations were done using added buffs from the following teammates:
Rebecca + Skull Thrasher + 
Moonlit Clouds
Mornye + Discord + 
Halo of Starry Radiance
100.00%
88.40%
84.00%
83.50%
79.30%
79.20%
78.00%
76.70%
74.40%
67.50%
64.60%
100.00%
Grants Lucy an easily activated Basic and Heavy DMG Bonus increase. This is a 1-piece set with only 1 Main Echo possible that also grants Lucy additional CRIT Rate, making it the overall best blend of stats she can have paired alongside 2 2-piece sets. These sets include:
Best combined with your choice of:
Rite of Gilded Revelation
Pact of Neonlight Leap
Eternal Radiance
Celestial Light
Endless Resonance
Reel of Spliced Memories
Moonlit Clouds
Empyrean Anthem
Tidebreaking Courage
Below you can find Main Echo options:
Substats: Energy Regen (Until Satisfied) > CRIT Rate = CRIT DMG > ATK% > Heavy DMG% > ATK
All recommended endgame stats portray a fairly good quality endgame build as a goal to aim for on most characters. However, don’t treat this as an end-all-be-all, and more of a suggestion.
All stat recommendations are given at S0 for 5-stars, S6 for 4-stars, and free characters (unless specified otherwise), based on total stats in the in-game stat-screen with the character out of combat but also active in the party (and hence some buffs may or may not apply). Any other precision may be directly specified. If not specified, Energy Regen requirements are estimated in the character’s best team.
HP: 15500+
DEF: 1100+
ATK: 2100-2200+
CRIT Rate: 65%+ (Before Adam Smasher)
CRIT DMG: 210%+
Energy Regen: 125%
Suitable for Mornye, Shorekeeper and Verina team variants. With Mornye, Lucy can get away with 121%, but Lucy will be short on Energy if some attacks miss.
Spectro DMG Bonus: 40-70%+
Below you can find the order of leveling the abilities for Lucy.
Res. Liberation
Basic Attack
Forte Circuit
Res. Skill
Intro Skill
Forte and Skill matter substantially less than Liberation and Basic. Intro can be skipped when levelling to save on resources at a minimal damage loss.
Gameplay and teams
Rotation & Gameplay
The focus of Lucy’s rotation is to build towards her Forte Heavy Attack by quickly building TCP and Root Access to then access her enhanced Ultimate at the end of her rotation. It’s possible to optimize this and the uptime on her Ultimate’s debuffs, as follows:
Opener “Rotation”
Lucy wants to act as the very first character in your team rotation. This is because before coming back to her, in her best teams, over 25 seconds of rotation time will need to be expended before her Ultimate needs to be used again. Hence, she can use it immediately and get all of her debuffs up:
Ultimate (First 5 Programs) (Swap)
The first 5 Programs, starting from the top, are always optimal to utilize for maximum damage and damage-increasing debuffs. At S2, using all 7 Programs becomes possible, but this only brings small amounts of utility.
Loop Rotation
Following her immediate Ultimate cast, when it’s finally Lucy’s turn to Intro in after both of her teammates’ buffs have been set up through their own rotations, Lucy rotates like so:
Intro
Skill: Payload
Skill: Pulse Interference
Basic 2
Basic 3
Basic 4 (Cancel animation endlag via Skill)
Skill: Deadlock
Basic: Thread 1
Basic: Thread 2
Basic: Thread 3
Basic: Thread 4
Heavy: Dual-threading
Heavy: Multi-threading (Cancel animation endlag via Ultimate)
Ultimate (First 5 Programs)
Outro
Rebecca - Lucy's best partner by far, Rebecca has a kit that's intrinsically tied to Lucy as her own kit mentions Rebecca by name several times throughout. Able to provide a variety of unique buffs, personal damage, and significant Hack synergy, Lucy and Rebecca pair seamlessly together in a way where she is the only character strong enough to have Lucy reveal her true potential - no alternative comes close.Mornye 
The Shorekeeper 
Verina - Lucy can use a variety of generalist Supports for her team's third slot, Mornye being ideal to put the highest emphasis possible on Hack damage via her ability to increase the team's Off-Tune Buildup Rate. However, Shorekeeper is a very close second that can serve almost exactly as effectively thanks to her CRIT buffs (and even see better results in Whimpering Wastes where building off-tune multiple times on the same enemy will almost never happen), and Verina is the generalist fallback permanently accessible option that will not be as strong, but make for a capable team overall still.Best Team
Shorekeeper may prove stronger in Whimpering Wastes as building Off-Tune multiple times on the same enemy (the reason why Mornye is ran) will almost never happen in that gamemode.
Calculations