Nero
A Nikke attached to the Ark's animal management troop — Happy Zoo. Her specialty is tending to all things pertaining to cats. Her personality and appearance are pretty feline-esque. Although she is soft-spoken, this does not mean she is in any way timid.
- EN：Jalitza Delgado
- JP：Ayana Taketatsu
- KR：Yu Hye-ji
- Tetra
- Defender
- Submachine Gun
- SSR
Submachine Gun
Ammo：120
Reload：1.3 sec
Burst Gen：0.1 %
Affects target(s). Deals 8.39 % of ATK as damage. Deals 200 % damage when attacking core.
PassiveCat's Repayment
Activates when recovery takes effect . Affects the target who cast the skill with recovery effect on Nero. Damage Taken ▼ 14.14 % for 5 sec. Activates when recovery takes effect . Affects self. Cat's Repayment: Damage Taken ▼ 8.43 % , stacks up to 5 time(s) and lasts for 5 sec.
PassiveLil' Paw
There is a 30 % chance of activating when attacked. Affects the target. Damage Taken ▲ 8.26 % for 5 sec. There is a 30 % chance of activating when attacked in Grumpy Cat status. Affects the target. Deals 158.05 % of final ATK as damage. Activates when entering battle. Affects self. Max HP ▲ 60.28 % continuously.
Active20 secGrumpy Cat
Affects 1 enemy unit(s) with the highest HP. Deals 1104.91 % of final ATK as damage. Affects self. Attract: Taunt all enemies for 15 sec. Activates when Cat's Repayment is fully stacked. Affects self. Grumpy Cat: HP Potency ▲ 60.08 % for 15 sec.
Happy Zoo
The Ark's animal management squad. They have incredible empathy for animals, and devote every fiber of their being to bettering the lives of animals. Their greatest desire is to run wild in nature amongst the animals after reclaiming the surface.
| Image | Name | Role | Manufacturer | Element | Weapon | Burst LV | Burst CD |
|---|---|---|---|---|---|---|---|
 | Biscuit | Supporter | Tetra | Electric | Rocket Launcher | 2 | 40 |
 | Leona | Supporter | Tetra | Water | Shotgun | 2 | 20 |