Honkai: Star RailWeltBest build, teams and other guides

Welt is a potent debuffing and damaging unit who focuses on controlling the battlefield. He consolidates strong offence with strong defence and is still a decent unit to this day. He excels at slowing enemies to a crawl with his Skill’s Slow and his Ultimate’s forced Imprisonment proc, and his Talent allows him to deal good damage against Slowed targets. Welt is rarely ever the most optimal teammate, but he is almost never a bad one.

Welt has aged relatively well since the start of the game, I’d say. While he’s no longer the only Imaginary unit in the game, his kit still provides him much value even now, being a part of many of the most fun teams in the game.

Welt’s Skill is a Bounce ability, dealing up to 72% ATK to a target enemy and then 72% ATK 2 more times to a random enemy each hit. Each hit has a 75% base chance to apply Slow, reducing the enemy’s SPD by 10% for 2 turns. Initially seeming like a rather weak Skill, its true power relies on the effects of his Talent.

Welt’s Talent will deal additional Imaginary DMG whenever he hits an enemy that is already Slowed, dealing up to an additional 60% ATK per hit. This functions as a multiplier increase, greatly increasing his overall damage output, and the reason he deals more damage than one would initially expect.

Combining his Skill with his Talent makes his Skill go from dealing a meagre 216% ATK in total to dealing 396% ATK instead, an amount more similar to some characters’ Ultimates. With this being on the Skill, it’s easy to maintain this amount of damage over the course of a fight, as well as maintaining the Slow required to activate the Talent. With his Skill also being a Bounce ability, it also deals vastly increased Toughness damage, and the extra hits offset the lowered base chance to apply the Slow, since you just have more hits to try and apply it with.

Welt’s Ultimate deals 150% ATK to all enemies and has a 100% base chance to Imprison enemies hit for 1 turn. Imprisoned enemies have their action delayed by up to 40% and have their SPD reduced by 10%. Combined with the Slow from his Skill, Welt can absolutely send his enemies to the Shadow Realm. Forced Imprisonment is extremely powerful as a defensive tool, not only because it delays enemies’ actions by a significant margin but also because it’s a control effect.

If you use Welt’s Ultimate after an Elite or Boss has started acting and you land the Imprisonment, their turn will just instantly end, because Imprisonment is a control effect. It quite literally says that affected units are unable to take action.

What this means is that Welt can just deny Elites and Bosses their Extra Actions they usually take, removing much of the danger they normally pose. Malefic Ape charging up an attack on someone? Denied. True Sting wanting to start charging his big AoE? Don’t think so, buddy. Ebondeer about to teamwipe you with his AoE upswing? ‘I’m about to ruin this man’s whole career.’

It’s a very underrated aspect of Welt’s kit, and it’s this kind of role consolidation that makes him a great generalist character. It also expands his possible roles further into being a more supportive secondary damage dealer for the likes of Dr. Ratio.

This is accentuated further by Welt’s Bonus Ability Traces. A2 in particular adds on functionality onto the Ultimate by giving it a 100% base chance to inflict a 12% DMG vulnerability to enemies hit for 2 turns. This vulnerability is applied before the actual damage from the Ultimate lands meaning you can immediately benefit from it. This also gives Welt an extra debuff to apply to enemies for the purpose of Dr. Ratio’s follow-up chance, as well as for any other effects that rely on debuff count to function.

A4 allows for more frequent Ultimates from Welt by refunding 10 Energy whenever he uses his Ultimate, and A6 gives Welt a 20% DMG bonus against enemies that are Weakness Broken. Since Welt has an easy-to-access delay buster in his kit, he can extend the Break duration of enemies by just not letting them have a turn, meaning he can really take advantage of this free extra DMG. This is especially true with Ruan Mei in the party, and this way Welt not only gets to deal highly competent damage but also gets to greatly reduce the overall incoming damage to the team.

As a standard 5-star, it is not unlikely to get Eidolons for Welt over time. He definitely doesn’t need them to be competitive, but they do offer some nice bonuses. E2 in particular can offer an additional source of consistent Energy and may result in shifting how long it takes to get his Ultimate, further expanding on both his offensive and supportive capabilities.

Welt’s got plenty of different team comps he can fit in due to his diverse nature. His damage is still good enough that you want to be putting him in a team where he can actively use SP for his Skill, and even then, you’d want to be using his Skill anyway for its Slow debuff. You can even opt for an Energy Regeneration Rate Link Rope on him to get even more Ultimates, but do know that you are sacrificing a very significant amount of damage by doing so, and the most significant Energy gains are still from using his Skill. So long as you can solve any potential SP issues, Welt works well as a hypercarry, a secondary dps, a support, or some combination of all of those.

He struggles a bit more in AoE content due to his Skill’s Bounce, but his Ultimate can still hit everything on the field quite easily. He can do it all, and he’s still got plenty of value to offer. The only limitation is the player’s imagination.