SSRWarriorMedium

Lee Yu

October 8, 2026 · 4 min read

SSR Medium Warrior, second-highest SSR attack at 16,518. Dual Pistols plus Frag Grenade. Raise her for damage, not HP.

16,518 attack, second among the 12 SSRs.
Frag Grenade reaches 9 attacks at 4★ with 70% bonus damage at 5★.
Martial Arts Family is 33.25% more monster damage at skill level 30.

lee yu
ssr
warrior
medium
dual pistols
frag grenade
martial arts family
wasteland wanderer

Skills

Skill 1

Dual Pistols

Auto AttackCD: 1.3sLv.1 required

0★: Attacks enemies with Dual Pistols, dealing damage equal to 83.675% ATK.

5★: Attacks enemies with Dual Pistols, dealing damage equal to 209.1875% ATK.

The 1.3s auto is the damage between grenade volleys. Star it so 16,518 attack keeps firing. It does not buff allies.

Star upgrades
1★	Deals 25% more damage.
2★	Bonus damage is increased to 40%.
3★	Bonus damage is increased to 75%.
4★	Bonus damage is increased to 105%.
5★	Bonus damage is increased to 155%.

Skill 2

Frag Grenade

Active SkillCD: 9.1sLv.5 required

0★: Hurls multiple grenades at random enemies 5 times, dealing damage equal to 16.1% ATK.

5★: Hurls multiple grenades at random enemies 5 times, dealing damage equal to 16.1% ATK.

This is the burst. The printed 16.1% and 5 hits do not change from 0★ to 5★ at skill level 30; stars add hits (7 at 2★, 9 at 4★) and bonus damage (20% / 45% / 70%). Random targets, not a named row.

Star upgrades
1★	Deals 20% more damage.
2★	Increases the number of attacks to 7.
3★	Bonus damage is increased to 45%.
4★	Increases the number of attacks to 9.
5★	Bonus damage is increased to 70%.

Skill 3

Martial Arts Family

Passive SkillLv.21 required

0★: In combat, deal 33.25% more damage to monsters.

5★: In combat, deal 33.25% more damage to monsters.

Personal monster damage. The printed line stays 33.25%; stars add more on top. Campaign and monster bosses. Quiet against players.

Star upgrades
1★	Deals 3% more damage to monsters.
2★	Increases bonus effect to 6%.
3★	Increases bonus effect to 9%.
4★	Increases bonus effect to 12%.
5★	Increases bonus effect to 15%.

Skill 4

Wasteland Wanderer

Ace SkillLv.31 required

0★: Increases ATK, DEF, and HP by 10%.

5★: Increases ATK, DEF, and HP by 10%.

Personal capstone. Unlocks at level 31 and 4★. The printed line does not change from 0★ to 5★. Unlock it for the 10% ATK, DEF, and HP.

Overview

At Lv.150 / 5★ she has 278,291 HP and 16,518 attack. Attack sits under Celeste (18,545) and above Logan (16,195). HP is 11th of 12. Summon: 10 fragments.

Best for / not for

Pick her in Warrior marches that need the second attack column and a random multi-hit. Frag Grenade scales to 9 hits at 4★ with 70% bonus damage at 5★, on 16,518 attack. Medium camp. Martial Arts Family is 33.25% more monster damage on her.

Skip her as a tank. 278,291 HP is 11th of 12, far under Zara (622,509). Skip her if you needed a team button: nothing here buffs allies. Kim Mina’s Cheer Captain is the back-row monster chant; Lee Yu is the gun.

Team

Wasteland Wanderer is personal. It does not buff the row.

Investment

Skill books are the sum of the per-level costs in the game data. Use the hero calculator for EXP and fragments.

Skill	Books to Lv.30	Books to Lv.40
Dual Pistols	199,500	199,500
Frag Grenade	199,500	199,500
Martial Arts Family	199,500	199,500
Wasteland Wanderer	199,500	199,500

Frag Grenade first: extra hits at 2★ and 4★ are the kit. Dual Pistols second: the 1.3s auto has to keep up. Martial Arts Family third on campaign. Wasteland Wanderer last, at level 31 and 4★. Both book columns read 199,500.

Expert breakdown

Overall evaluation

Best skill priority

Upgrade in this order

1
Frag Grenade9 hits at 4★ and 70% bonus damage at 5★.
2
Dual Pistols1.3s damage between volleys.
3
Martial Arts Family33.25% more monster damage, campaign only.
4
Wasteland Wanderer10% ATK, DEF, and HP at level 31 and 4★.

Strengths

16,518 attack, second among the 12 SSRs.
Frag Grenade reaches 9 attacks at 4★ with 70% bonus damage at 5★.
Martial Arts Family is 33.25% more monster damage at skill level 30.

Weaknesses

278,291 HP, 11th of 12. She will not hold a front.
No ally buff. Family is personal and monster-only.

Best role

PvPGoodGood. Second SSR attack; Family is quiet.
BossGoodGood if the boss counts as a monster. Grenades plus Family.
ArenaGoodGood. Same as PvP.
CampaignExcellentExcellent. Family is the campaign skill.
SupportPoorPoor. Nothing for allies.

Verdict

Raise Lee Yu when the march is Warrior and you need the attack seat under Celeste. Star Frag Grenade through 4★ for nine hits, take Wasteland Wanderer at 31 and 4★ for the 10% stats, and keep 278,291 HP off the tank tile. Do not raise her as a front. Do not expect Cheer Captain from this kit.