6. Carnage Kabuto

Carnage Kabuto is an artificial mutant, created by Dr. Genus of The House of Evolution. Carnage is by far their strongest creation.

There isn't much to say about Carnage. Truth be told, the only reason we like him so much is because of one particular moment during his fight with Saitama. Saying that though, it is one of the best moments of the entire show. Carnage is showcasing his strength and is about to hit Saitama, when his survival instincts kicked in during the moment of battle and reduced him to a scared mess of mutant as he sensed imminent death.