Read more about Ursa Major at: Wikipedia

Official Site: Marvel

Ursa Major ( , Mikhail Uriokovitch Ursus) is a fictional character, a mutant appearing in American comic book published by Marvel Comics. The character has been depicted as a member of the Soviet Super-Soldiers.

The character appeared as a human in the live-action Marvel Cinematic Universe film Black Widow (2021), portrayed by Olivier Richters.

His first appearance was in Incredible Hulk (vol. 2) #258, and the character was created by Bill Mantlo and Sal Buscema.

Born in Blagoveshchensk, Mikhail Ursus was one of the first known mutants born in the Soviet Union in the 20th Century to survive past childhood. Up until the time of his birth, the Soviet government had killed all mutants at the first manifestation of their superhuman powers. In Mikhail's case this was at a young age and he was abandoned in the mountains, growing up amongst the animals of the forest and presumably using his shape-changing power to survive.

Ursa Major has not been a contender in any CBUB matches.