In Co-op mode, Yuki's REC stat is increased from 5 to 7, due to her base ATK of +2. Yuki's passive does not change.
Yuki's Hyper, Gamble!, has a different effect in Co-op. When used, it will instantly deal damage to either the player or the Co-op boss equal to the player's max HP.
Yuki's passive and Hyper are unchanged in Bounty Hunt mode.
Yuki's base stats give her 28 starting stars and a markup of +30% at shops.