Baron Zemo (Yost Universe)
Baron Heinrich Zemo is a major antagonist of The Avengers: Earth's Mightiest Heroes, serving as a major antagonist in Season 1 and a minor antagonist in Season 2.
He is one of the first leaders of the terrorist organization HYDRA and the leader of a group of supervillains known as the Masters of Evil. He is one of the arch enemies of Captain America (alongside the Red Skull)
He is voiced by Robin Atkin Downes, who also portrayed Abomination in the same series, as well as Doomsday in Batman v Superman: Dawn of Justice, the Medic in Team Fortress 2, Travis Touchdown in the No More Heroesseries, Abomination and Annihilus in the 2010 Marvel Animated Universe, Broseph Chillaxton in Regular Show, Lachlan McDermott in Criminal Minds, Luxord in the Kingdom Hearts series, Deathstroke in Beware the Batman, Riddler in Batman: The Enemy Within, Falcon Graves in Ducktales, Mumm-Ra in ThunderCats, Shinnok in Mortal Kombat Legends: Battle of the Realms, Emperor Nefarious in Ratchet & Clank: Rift Apart, and Scarecrow in Batman: The Long Halloween.