Lord Dominator is the main antagonist of the Disney Channel/Disney XD animated TV series Wander Over Yonder. She is the former lead in the Galactic Villain Leaderboard who takes pride in her mayhem the same way a bully enjoys messing with nerdy kids - and according to herself, the whole galaxy is full of "nerdy kids".
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.
