luka honkai star rail

Luka

NihilityPhysical4★Released: 23/07/2025 · v3.4
Luka the Iron Fist

“Tell you a secret: the trick to becoming a champion is training hard while everyone is resting.”

World
Jarilo-VI
Debut Banner
* Any Warp Banner (except Departure Warp)
Release Date
2023-08-09
Version
introduced in 1.0, playable from 1.2

Faction

  • Belobog
  • Wildfire
  • The Moles

Relatives

  • Unnamed father
EN Howard Wang
CN Xiao Zhai (萧翟)
JP Kajiwara Gakuto (梶原岳人)
KR Lee Joo-seung (이주승)
  • Gladiator of Wildfire

Stats Base

Lv. 80
  • HP Base
  • ATK Base
  • DEF Base
  • SPD
  • Taunt

Ascension Materials

20304050607080
Pros & Cons

Pros

  • Very strong single-target damage
  • Can trigger his own Bleed effect to front-load his damage even further
  • Potential synergy with future Bleed characters
  • His Ultimate has a built-in damage boost, so he supports the whole team
  • Easy to build because he does not need CRIT stats

Cons

  • He has no AoE ability, so he does little for the team before the boss
  • The Max HP portion of his Skill's damage is capped by his ATK, and since he is only a 4-star that number cannot get very high

Best Luka Build Guide

Stat Targets

  • Effect Hit Rate 67%
  • ATK 2600 or higher
  • SPD 135+ / SPD must be higher than Kafka

This Bleed debuffer build lets Luka apply DEF reduction and Bleed to enemies.
A total of 67% Effect Hit Rate is the ideal amount for Luka to keep Bleed up reliably.

You do not need to build CRIT on Luka, because most of his damage comes from Bleed, which scales with ATK.
SPD also matters so he can trigger the Firmament Frontline: Glamoth Planar Ornament set.

Luka Skill, Trace and Eidolon Upgrade Priority

Skill Priority

chiến kỹ Lacerating Fist thiên phú Flying Sparks tuyệt kỹ Coup de Grâce Direct Punch

Trace Priority

nghiền nát ý chí Crush Fighting Will động năng quá tải Kinetic Overload phanh theo chu kỳ Cycle Braking

Eidolon Priority

tinh hồn 2 luka The Enemy is Weak, I am Strong tinh hồn 4 luka Never Turning Back tinh hồn 6 luka A Champion's Applause

Luka Skills

Basic ATK

Direct Punch

[Single Target]
Energy Generated20
Toughness Break Single Target: 10

Deals Physical DMG equal to 140% of Luka’s ATK to one designated enemy.

Lv. 10

Upgrade Materials

Lv. 1 to Lv. 10

Lacerating Fist

[Single Target]
Energy Generated30
Toughness Break Single Target: 20

Deals Physical DMG equal to 150% of Luka’s ATK to one designated enemy target. In addition, there is a 100% base chance to inflict Bleed on them, lasting for 3 turn(s).
While Bleeding, the enemy will take 24.0% of their Max HP as Physical DoT at the start of each turn. This DMG will not exceed more than 423% of Luka’s ATK.

Lv. 15

Upgrade Materials

Lv. 1 to Lv. 15

Coup de Grâce

[Single Target]
Energy Generated5
Toughness Break Single Target: 30

Receives 2 stack(s) of “Fighting Will,” with a 100% base chance to increase one designated enemy target’s DMG received by 24.0% for 3 turn(s). Then, deals Physical DMG equal to 396% of Luka’s ATK to the target.

Lv. 15

Upgrade Materials

Lv. 1 to Lv. 15

Flying Sparks

[Enhance]
Energy Generated5

After Luka uses his Basic ATK “Direct Punch” or Skill “Lacerating Fist,” he receives 1 stack of Fighting Will, up to 4 stacks. When he has 2 or more stacks of Fighting Will, his Basic ATK “Direct Punch” is enhanced to “Sky-Shatter Fist.” After his Enhanced Basic ATK’s “Rising Uppercut” hits a Bleeding enemy target, the Bleed status will immediately deal DMG for 1 time equal to 94% of the original DMG to the target. At the start of battle, Luka will possess 1 stack of Fighting Will.

Lv. 15

Upgrade Materials

Lv. 1 to Lv. 15

Anticipator

Energy Generated20

Immediately attacks the enemy. Upon entering battle, Luka deals Physical DMG equal to 50% of his ATK to a random single enemy with a 100% base chance to inflict his Skill’s Bleed effect on the target. Then, Luka gains 1 additional stack of Fighting Will.

Luka Traces

Total Trace Bonuses
  • ATK% +28%
  • Effect Hit Rate +18%
  • DEF% +12.5%

Luka Eidolons

Fighting Endlessly
Eidolon 1

When Luka takes action, if the target enemy is Bleeding, increases DMG dealt by Luka by 15% for 2 turn(s).

The Enemy is Weak, I am Strong
Eidolon 2

If the Skill hits an enemy target with Physical Weakness, gain 1 stack(s) of Fighting Will.

Born for the Ring
Eidolon 3

Skill Lv. +2, up to a maximum of Lv. 15.
Talent Lv. +2, up to a maximum of Lv. 15.

Never Turning Back
Eidolon 4

For every stack of Fighting Will obtained, increases ATK by 5%, stacking up to 4 time(s).

The Spirit of Wildfire
Eidolon 5

Ultimate Lv. +2, up to a maximum of Lv. 15.
Basic ATK Lv. +1, up to a maximum of Lv. 10.

A Champion's Applause
Eidolon 6

After the Enhanced Basic ATK’s “Rising Uppercut” hits a Bleeding enemy target, the Bleed status will immediately deal DMG 1 time equal to 8% of the original DMG for every hit of Direct Punch already unleashed during the current Enhanced Basic ATK.