>>717896646
Nah, Ado was always confirmed by her artist to be a girl, albeit a tomboyish one, and therefore was commonly mistaken as a boy. He likely intentionally gave her more girlish features and extended the name to a girls name in 64 to reflect this. Ado could easily still be considered and used as a nickname for Adeline.
Or I dunno if they're human consciousness incarnate or whatever later Kirby games throw out I guess she could be whatever form she wants Maybe she was a boy, then decided to change into a girl. Maybe she was that thing on the skateboard that doodled shit prior to that.