Dr. Diminutive

Dr. Diminutive is a character from Phineas and Ferb and is a reoccurring antagonist in Knights of the Multiverse Season 1. He is a member of the evil organization L.O.S.R., where he always trying to rise to the top of the food chain and take over the organization for himself, with his big break for it being the creation/restoration of the legendary King Ghidorah.

Personality
Diminutive has a very strong Napoleon complex in the highest sense. He's often overly-aggressive, always has to make his voice the loudest in the room, and believes he deserves to be the most powerful evil scientist in the world. He's always seeking control of the most powerful gadget or easiest path to in all of the "experiments" he takes part in, often to the other scientists' expense.