Suggestions by @andymayer

Sosuke Aizen

as Anime in Who could fight Thanos in hand-to-hand combat?

Bobobo-bo Bo-bobo

as Anime in Who could fight Thanos in hand-to-hand combat?

Haruko Haruhara

as Anime in Who could fight Thanos in hand-to-hand combat?

Dio Brando

as Anime in Who could fight Thanos in hand-to-hand combat?

Simon (Gurren Lagann)

as Anime in Who could fight Thanos in hand-to-hand combat?

Makima

as Anime in Who could fight Thanos in hand-to-hand combat?

Samus Aran

as Nintendo in Who could fight Thanos in hand-to-hand combat?

Captain Falcon

as Nintendo in Who could fight Thanos in hand-to-hand combat?

The Skeleton King

as Disney (TV) in Who could fight Thanos in hand-to-hand combat?

Emperor Belos

as Disney (TV) in Who could fight Thanos in hand-to-hand combat?

Darkseid

as DC in Who could fight Thanos in hand-to-hand combat?

Bill Cipher

as Villains in Who could fight Thanos in hand-to-hand combat?

Bill Cipher

as Who does Thanos fear the most? in Who could fight Thanos in hand-to-hand combat?

Tabuu

as Who does Thanos fear the most? in Who could fight Thanos in hand-to-hand combat?

Kronika

as Who does Thanos fear the most? in Who could fight Thanos in hand-to-hand combat?

Anti-Monitor

as Who does Thanos fear the most? in Who could fight Thanos in hand-to-hand combat?

Wreck-It Ralph (Disney Character)

as Disney in Who could fight Thanos in hand-to-hand combat?

Utrom Shredder

as Paramount Pictures in Who could fight Thanos in hand-to-hand combat?

Optimus Prime

as Paramount Pictures in Who could fight Thanos in hand-to-hand combat?

Leonard Nimoy

as Great actors in Why do Villains always get the good stuff?