In Co-op mode, Marie Poppo's stats and passive do not change.
Marie Poppo's Hyper, Ubiquitous, has a different effect in Co-op. When used, the player will be prompted to target a non-KO'd enemy. Upon doing so, the player will warp to the target's current panel and steal stars from them equal to 10x the norma level of the player.
Marie Poppo's passive and Hyper are unchanged in Bounty Hunt mode.
Marie Poppo's base stats give her 50 starting stars and a discount of -25% at shops.