In Co-op mode, Robo Ball's stats and passive do not visibly change. However, part of Robo Ball's passive does not function:
- Robo Ball does not lose 1/4 stars when KO'd in battle, but loses 1/8 stars like any other character.
Robo Ball's Hyper does not change.
Robo Ball's passive and Hyper are unchanged in Bounty Hunt mode.
Robo Ball's base stats give it 54 starting stars and a discount of -35% at shops.