[Source] The Brainbots are Megamind's robotic jellyfish assistants. They have special abilities such as light display and flight. Megamind uses them instead of Minion because Minion thinks Megamind is in love with Roxanne Ritchi so he left him.They would later aid Megamind into saving Roxanne and Metro City from the threat of Tighten, to which Megamind manages to defeat. They are seen near the end of the film repairing the damages caused in Metro City as ordered by Megamind, who finally revels in becoming a real hero.