Grandmaster

The Grandmaster is a Marvel Comics character who appeared in Ultimate Spider-Man, voiced by Jeff Bennett, in the TV show Guardians of the Galaxy, voiced by Jason Spisak, and will appear in Thor: Ragnarok, played by Jeff Goldblum. Just like the Collector, he is an ancient alien being who is morally ambigous, only instead of collecting things, he likes to challegenge superheroes and pit them against each other. He is very intelligent and calculating.