Chief Sidekick Overview
what it doesChief Sidekick is an S-Rank Stun W-Engine in Zenless Zone Zero with 714 base ATK and 24% CRIT Rate at max level; it is the best-in-slot W-Engine for Norma.
- Rank
- S-Rank
- Specialty
- Stun
- Base ATK (max)
- 714
- Substat
- CRIT Rate 24%
- Best for
- Norma
- Refinements
- R1 – R5
Passive by Refinement
R1 → R5| Rank | Passive effect |
|---|---|
| R1 | Impact +30; DMG ignores 15% of the target's Fire RES. Off-field: Energy Regen +0.4/s. When an EX Special Attack deals Fire DMG, all Agents' DMG +12.5% for 30s (max 2 stacks, once per skill). Only one instance per squad. |
| R2 | Impact +33; DMG ignores 17.2% of the target's Fire RES. Off-field: Energy Regen +0.46/s. When an EX Special Attack deals Fire DMG, all Agents' DMG +14.4% for 30s (max 2 stacks, once per skill). Only one instance per squad. |
| R3 | Impact +36; DMG ignores 19.5% of the target's Fire RES. Off-field: Energy Regen +0.52/s. When an EX Special Attack deals Fire DMG, all Agents' DMG +16.3% for 30s (max 2 stacks, once per skill). Only one instance per squad. |
| R4 | Impact +39; DMG ignores 21.7% of the target's Fire RES. Off-field: Energy Regen +0.58/s. When an EX Special Attack deals Fire DMG, all Agents' DMG +18.1% for 30s (max 2 stacks, once per skill). Only one instance per squad. |
| R5 | Impact +42; DMG ignores 24% of the target's Fire RES. Off-field: Energy Regen +0.64/s. When an EX Special Attack deals Fire DMG, all Agents' DMG +20% for 30s (max 2 stacks, once per skill). Only one instance per squad. |
Stat Progression
Lv10 → Lv60| Stat | Lv10 | Lv20 | Lv30 | Lv40 | Lv50 | Lv60 | Max |
|---|---|---|---|---|---|---|---|
| Base ATK | 48 | 137 | 254 | 375 | 494 | 607 | 714 |
| CRIT Rate | 9.6% | 12% | 14.4% | 16.8% | 19.2% | 21.6% | 24% |
Max column is Lv60 after the final Modification.
Used By
recommended onChief Sidekick FAQ
quick answersWhat does Chief Sidekick do in Zenless Zone Zero?+
Chief Sidekick is an S-Rank Stun W-Engine. At max level it provides 714 base ATK and 24% CRIT Rate. Its passive at R1: Impact +30; DMG ignores 15% of the target's Fire RES. Off-field: Energy Regen +0.4/s. When an EX Special Attack deals Fire DMG, all Agents' DMG +12.5% for 30s (max 2 stacks, once per skill). Only one instance per squad.
Who is the best agent for Chief Sidekick?+
Chief Sidekick is the best-in-slot W-Engine for Norma (Ether Stun).
Is Chief Sidekick worth refining to R5?+
Refinement only upgrades the passive, not the base stat or substat. At R1 the passive reads: Impact +30; DMG ignores 15% of the target's Fire RES. Off-field: Energy Regen +0.4/s. When an EX Special Attack deals Fire DMG, all Agents' DMG +12.5% for 30s (max 2 stacks, once per skill). Only one instance per squad. At R5 it reads: Impact +42; DMG ignores 24% of the target's Fire RES. Off-field: Energy Regen +0.64/s. When an EX Special Attack deals Fire DMG, all Agents' DMG +20% for 30s (max 2 stacks, once per skill). Only one instance per squad. That is 1.4× the R1 values. S-Rank refinements cost duplicate limited pulls, so only refine if you already own extra copies.
What is the max base ATK of Chief Sidekick?+
Chief Sidekick reaches 714 base ATK at max level (Lv60, Modification 5), starting from 48 at Lv10. Its CRIT Rate substat grows from 9.6% to 24%.
Which agents can equip Chief Sidekick?+
Only Stun agents can use Chief Sidekick's passive — any agent can slot it, but the passive stays inactive on other specialties. Stun agents include Roxy, Norma, Lighter, Qingyi, Von Lycaon, Trigger, Dialyn, Ju Fufu and 5 more.

