Baron Zemo I: Dr. Heinrich Zemo created deadly weapons for Germany during World War II, and his plotting led Captain America to be frozen for decades. He later formed the original Masters of Evil to defeat his old foe.

Nova Corps Centurion: The Nova Corps was originally the military and exploration force of Xandar. When Xandar was destroyed, the Corps expanded its scope, enlisting non-Xandarians and policing entire galaxies.