Luka 
Nihility The boxing champion in Belobog's Underworld, and one of Wildfire's most capable fighters. The consecutive reigning champion of the Fight Club, whose enthusiasm inspires children of the Underworld to dream big.
HP
ATK
DEF
SPEEDBleed Debuffer
Best Light Cone
Luka Best Stats
Luka Best Substats
Luka Best Relics
Luka Best Teams
F2P DoT Luka (Serval • Asta • Natasha)
F2P-friendly DoT team built around Luka. Serval is the main Lightning DoT dealer (Shock), Asta provides SPD and Burn application, and Natasha handles healing/defense.
Luka Best DoT Team (Kafka • Ruan Mei • Huohuo)
Luka's top DoT-oriented team. Kafka is the primary DoT-triggering DPS, Ruan Mei enhances Break and prolongs DoT effectiveness, and Huohuo handles healing.
Physical Luka Team (Sushang • Silver Wolf • Natasha)
Physical-focused Luka team. Silver Wolf provides weakness implantation for Physical damage, Sushang is the Physical DPS, and Natasha keeps the team alive.
Skills
Deals Physical DMG equal to #1[i]% of Luka's ATK to one designated enemy.
Deals Physical DMG equal to #1[i]% of Luka's ATK to one designated enemy target. In addition, there is a #2[i]% base chance to inflict Bleed on them, lasting for #5[i] turn(s). While Bleeding, the enemy will take #3[f1]% of their Max HP as Physical DoT at the start of each turn. This DMG will not exceed more than #4[i]% of Luka's ATK.
The base chance of applying debuffs to targets hit. The final probability is affected by the attacker's Effect Hit Rate and enemy targets' Effect RES.
Receives #5[i] stack(s) of "Fighting Will," with a #2[i]% base chance to increase one designated enemy target's DMG received by #3[f1]% for #4[i] turn(s). Then, deals Physical DMG equal to #1[i]% of Luka's ATK to the target.
The base chance of applying debuffs to targets hit. The final probability is affected by the attacker's Effect Hit Rate and enemy targets' Effect RES.
After Luka uses his Basic ATK "Direct Punch" or Skill "Lacerating Fist," he receives #1[i] 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 #2[i]% of the original DMG to the target. At the start of battle, Luka will possess 1 stack of Fighting Will.
Traces
Eidolon
When Luka takes action, if the target enemy is Bleeding, increases DMG dealt by Luka by
If the Skill hits an enemy target with Physical Weakness, gain
Skill Lv. +2, up to a maximum of Lv.
For every stack of Fighting Will obtained, increases ATK by
Ultimate Lv. +2, up to a maximum of Lv.
After the Enhanced Basic ATK's "Rising Uppercut" hits a Bleeding enemy target, the Bleed status will immediately deal DMG 1 time equal to