October 8, 2026 · 4 min read
UR Heavy Tactical who shouts front-row DEF. 948,108 HP at Lv.150/5★. Raise him to keep the front standing, not to carry.
Skill 1
Auto AttackCD: 1.45sLv.1 required
0★: Fires a shock grenade at enemies, dealing damage equal to 114% ATK.
5★: Fires a shock grenade at enemies, dealing damage equal to 421.8% ATK.
He is not empty between shouts. The grenade is filler on 13,741 attack.
| 1★ | Deals 35% more damage. |
|---|---|
| 2★ | Bonus damage is increased to 75%. |
| 3★ | Bonus damage is increased to 130%. |
| 4★ | Bonus damage is increased to 190%. |
| 5★ | Bonus damage is increased to 265%. |
Skill 2
Active SkillCD: 10.3sLv.5 required
0★: Lets out a motivating shout, increasing front-row allies’ DEF by 30.5%. Duration is not listed at 0★; 2★ sets it to 8s.
5★: Lets out a motivating shout, increasing front-row allies’ DEF by 50.5% for 10s.
This is the skill. Until 3★ it is front-row only. It does not deal damage.
| 1★ | Increases DEF by 10%. |
|---|---|
| 2★ | Increases duration to 8 second(s). |
| 3★ | Affects all allies. |
| 4★ | Increases bonus effect to 20%. |
| 5★ | Increases duration to 10 second(s). |
Skill 3
Passive SkillLv.21 required
0★: In combat, reduces incoming damage by 15.3%.
5★: In combat, reduces incoming damage by 30.3%.
Personal. It does not name allies. He takes the hits so Iron Will keeps casting.
| 1★ | Reduces damage taken by 3%. |
|---|---|
| 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
Ace SkillLv.31 required
0★: Increases ATK, DEF, and HP by 20%. Increases Skill Cooldown Speed by 20%.
5★: Increases ATK, DEF, and HP by 20%. Increases Skill Cooldown Speed by 20%.
Personal ceiling. Unlocks at level 31 and 4★. The printed line does not change from 0★ to 5★.
Dirk is the UR Heavy Tactical who shouts DEF onto the front. Modified Grenade is a 1.45s auto. Iron Will raises front-row DEF; at 3★ it hits all allies. Heavy Armor is personal incoming-damage cut. Doomsday Judgment unlocks at level 31 and 4★.
At Lv.150 / 5★ he has 948,108 HP and 13,741 attack. HP, defense, and power are second among 15 URs. Attack is 14th. Summon: 10 fragments.
Pick him when the front is dying and you need a DEF chant plus a Heavy HP bar. 948,108 HP is second among 15 URs. Iron Will is the team button; Heavy Armor is why he lives to press it.
Skip him as a damage UR. 13,741 attack is 14th, next to Arnold (13,880) and Bekka (13,331). Lucian (26,726) is the burst check. If Arnold already holds the Heavy Tactical seat, Dirk is not a second carry.
Iron Will names the front row until 3★, then all allies. Put attack in the seats that receive the DEF (Lucian, Monroe). A back-row sniper does not get the shout until 3★.
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 |
|---|---|---|
| Modified Grenade | 226,000 | 576,000 |
| Iron Will | 226,000 | 576,000 |
| Heavy Armor | 226,000 | 576,000 |
| Doomsday Judgment | 226,000 | 576,000 |
Iron Will first: front DEF is the kit. Heavy Armor second: he has to live through the 10.3s cycle. Doomsday Judgment third, at level 31 and 4★. Modified Grenade last.
Expert breakdown
Upgrade in this order
Verdict
Raise Dirk when the Heavy front needs a DEF chant, not a second Lucian. Star Iron Will, take Doomsday Judgment at level 31 and 4★, and point the shout at seats that deal damage. Do not gear him as a carry. If Arnold already holds that Heavy seat, pick one wall, not both at 5★, unless the front still dies.
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