Kaboom the Cannon Overview
what it doesKaboom the Cannon is an A-Rank Support W-Engine in Zenless Zone Zero with 625 base ATK and 50% Energy Regen at max level; it is the best-in-slot W-Engine for Lucy.
- Rank
- A-Rank
- Specialty
- Support
- Base ATK (max)
- 625
- Substat
- Energy Regen 50%
- Best for
- Lucy
- Refinements
- R1 – R5
Passive by Refinement
R1 → R5| Rank | Passive effect |
|---|---|
| R1 | Any squad member hit: squad ATK +2.5% for 8s (max 4 stacks, each character provides 1 stack). |
| R2 | Any squad member hit: squad ATK +3.13% for 8s (max 4 stacks, each character provides 1 stack). |
| R3 | Any squad member hit: squad ATK +3.75% for 8s (max 4 stacks, each character provides 1 stack). |
| R4 | Any squad member hit: squad ATK +4.38% for 8s (max 4 stacks, each character provides 1 stack). |
| R5 | Any squad member hit: squad ATK +5% for 8s (max 4 stacks, each character provides 1 stack). |
Stat Progression
Lv10 → Lv60| Stat | Lv10 | Lv20 | Lv30 | Lv40 | Lv50 | Lv60 | Max |
|---|---|---|---|---|---|---|---|
| Base ATK | 42 | 120 | 222 | 329 | 430 | 527 | 625 |
| Energy Regen | 20% | 25% | 30% | 35% | 40% | 45% | 50% |
Max column is Lv60 after the final Modification.
Best Agents
recommended onLucy
Fire · Support
Velina
Wind · Anomaly
Astra Yao
Ether · Support
Rina
Electric · Support
Sunna
Physical · Support
Lucia
Physical · Attack
Nicole Demara
Ether · Support
Soukaku
Ice · Support
Yuzuha
Physical · Support
Passive active on Support agents: Astra Yao, Rina, Sunna, Nicole Demara, Soukaku, Lucy, Yuzuha.
Kaboom the Cannon FAQ
quick answersWhat does Kaboom the Cannon do in Zenless Zone Zero?
Kaboom the Cannon is an A-Rank Support W-Engine. At max level it provides 625 base ATK and 50% Energy Regen. Its passive at R1: Any squad member hit: squad ATK +2.5% for 8s (max 4 stacks, each character provides 1 stack).
Who is the best agent for Kaboom the Cannon?
Kaboom the Cannon is the best-in-slot W-Engine for Lucy (Fire Support).
Is Kaboom the Cannon worth refining to R5?
Refinement only upgrades the passive, not the base stat or substat. At R1 the passive reads: Any squad member hit: squad ATK +2.5% for 8s (max 4 stacks, each character provides 1 stack). At R5 it reads: Any squad member hit: squad ATK +5% for 8s (max 4 stacks, each character provides 1 stack). That is 2× the R1 values. A- and B-Rank copies come from the standard banner and shop, so refining is cheap and usually worth it.
What is the max base ATK of Kaboom the Cannon?
Kaboom the Cannon reaches 625 base ATK at max level (Lv60, Modification 5), starting from 42 at Lv10. Its Energy Regen substat grows from 20% to 50%.
Which agents can equip Kaboom the Cannon?
Only Support agents can use Kaboom the Cannon's passive — any agent can slot it, but the passive stays inactive on other specialties. Support agents include Astra Yao, Rina, Sunna, Nicole Demara, Soukaku, Lucy, Yuzuha.

