Very cool! Especially Ate, exited to see her in motion. That said the mouth on the back sprite looks... weird. Too small, perhaps? Not enough lip showing? Idk, heads at kind of an awkward angle, and i'm not an art person but... my gut instinct says Wrong.
Viewing post in Candidates Animations Design (NSFW warning) comments
Seconding this, the back sprites' heads are a little odd to me. Admittedly that cannot be an easy thing to draw, since you wanna be able to show the faces while still maintaining the positioning.
(edit- I specifically mean the graphics of the first position on this page, probably shoulda mentioned that.)