Barbarians

Barbarians are savage and untamed villains. They are cruel, dangerous, bloodthirsty, and their goal is to rule everything by pure force alone. Although stereotypically strong, they do not have to be strong nor to have killed someone to qualify. Basically, a barbarian fills the role of a semi-feral being intelligent enough that they still retain some humanity but are still ruled mainly by base instincts such as war and aggression.

While most Barbarians are portrayed as semi-intellectual ferals that can't be judged by our systems because of being ferals, there are also exceptions where these villains can be very smart and at times even hit the Mastermind category