Dr. Bringdown

Dr. Bringdown is a character from Phineas and Ferb and is a supporting antagonist in the first season of The Knights of the Multiverse. He is a member of the evil organization L.O.S.R. and usually assists other scientists in the group with projects.

Personality
As his name implies, Bringdown tends to look on the downside of things, pointing out the inconsistencies in a situation or point out the flaws in a plan (though his concerns will usually be ignored).

Abilities
Due to some kind of lab incident, Bringdown's right arm was mutated with green skin and brown fur. With it, he's able to use its claws to cut most (average sized) things and slightly advanced strength.