If I may sperg out for a moment, I can't really see Gooey being a clone of Kirby. He grabs foes with his tongue rather than inhaling them (I guess he'd be more similar to Yoshi) and has never been in a "hatted Kirby" game, so we've only ever seen him use the basic seven "Dream Land" abilities, with the shape-shifting and whatnot. That'd probably make a pretty unique move set by itself.