The popular girl the protagonist despises
One of the little guys from "A Bug's Life" :)
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(The Spectators group is always open!)
I mean disney has star wars now so honestly i get a rey/leia vibe but also if we want to go disney animation i could imagine meg from hercules

closest to Timothy Q. Mouse
animal sidekick. the fat Cinderella mouse or Pocahontas' raccoon
I much prefer the Meg from Hercules answer!
If I could pick anyone from a movie, I'm totally getting a Luna Lovegood vibe... But from Disney... Man, that's tough... Before 2015, Dreamworks was part of Disney, right? So then, I'd say the girl from Monsters vs. Aliens...
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(The Spectators group is always open!)
is what Queen Elsa looks like when vacationing on a not-quite-so-tropical-anymore island.
A trapped soul from the Little Mermaid (I've never seen Atlantis so I'm not going to venture there!)
Jane from Tarzan
~A mind is like a parachute; it only works when open~
is one of the unwitting flunkies on the raid from the surface world to Atlantis.