Margalo is the deuteragonist of the 2002 film Stuart Little 2. She is a yellow canary who was Falcon's former servant/adoptive daughter figure, but is also still Stuart's best friend and later love interest.
Vote which fictional character would naturally fit in-universe with a big-named franchise! No time-travel, no interdimensional crap, no "Pooh's Adventures", they would just exist in-universe.
