The Mime

The Mime is the main antagonist of the 2014 animated film, The GoAnimate Movie.

Personality
The Mime comes off as an easygoing, simpler, more dimwitted and helpful person, which tricks other people into trusting him so he can carry out his job more efficiently. When left to his own devices, the Mime is shown to be a sadistic, greedy, conniving, and somewhat ruthless. He also displays some sociopathic and obsessive tendencies, manipulating the other villains into abandoning him, trying to kill PC Guy in front of Eric without flinching and even giving a momentary glimpse of amusement to Eric's confusion.

The Mime is always in control of his situation, and is incredibly duplicitous and manipulative, using psychology and practicality to challenge Eric by trying to mimick him to gain the trust, and then finally control of the headquarters.

Also, unlike most villains, the Mime really does not like arrogance, but does have constant mood swings, being entertaining, comedic and laid-back one minute.

No matter what situation he is in, Mime presents himself a gentleman. He puts up with PC Guy's idiocy with no complaint, offers a drink to Eric when he holds him prisoner and even holds his end of the bargain when Star agrees to his terms. However, it is implied that Mime is hiding a personality significantly more unhinged under this, evidenced when he briefly grows a massive smile when he orders Eric to destroy the wand, before returning to his stoic nature in a literal second.

However, when he finds out that he has been deceived, he becomes extremely wrathful, destructive, obstreperous, aggressive, and violent, so he chases Eric and PC Guy with his hammer, presumably trying to kill him.