For the Hail Mary swap au, I often see Rocky is pushy, bossy, protective (and bonus detail in fics he is also a major alien fucking freak) in regular canon so dear god poor Eridian Grace. This rock hesitantly curious of alien life and then said alien roasts his organization skills, barrels him into coming onto the ship lab bc he can’t use it, openly talks abt how he should plan feeding him, and is constantly having cuteness aggression. Eridian Grace flash banged by the mere concept of someone else feeding him and he just starts yelling that Rocky is a pervert