Brain (Teen Titans Go!)

The Brain is a major recurring villain from Teen Titans Go!. He is a disembodied brain in a robot jar and the leader of the Brotherhood of Evil. The Brain is mostly accompanied by Monsieur Mallah. The Brain's go-to crime is kidnapping the Teen Titans and trapping them in a dungeon.

Biography
The Brain made his first appearance in the episode "Brian", where he kidnapped the Teen Titans, trapped them in his electric dungeon, and deprived them of their powers. The Titans were helpless to escape and stayed there for a total of 14 months before their little buddies noticed they were missing and teamed up to save them.

While the Titans were in the dungeon, Robin kept thinking of a bunch of different escape plots. All of which failed and led to the entire team getting electrocuted.

The Brain returns for his second major role in "40% 40% 20%",

The Brain appears as a court judge in "A Farce", when Brother Blood tries to sue the Teen Titans for property damage. Being their enemy, The Brain is unfairly harsh with the Teen Titans.

The Brain was the main antagonist of "Operation Dude Rescue", where he kidnapped Robin, Cyborg, and Beast Boy, leaving it up to Starfire, Raven, Jinx, Terra, and Ravager to save them. Although the girls defeated The Brain and saved the male Titans, the guys insisted that the girls should go back home and let them save themselves, because they were women and this mission would be too difficult for them. The girls decided to leave, leaving the boys trapped in their prison forever, allowing The Brain to continue his evil plot, while they all went out for milkshakes.

In "Shrimps and Prime Rib",

Trivia

 * A running gag in the show is for people to address him as "Brian" instead of "Brain".