Brainstorm has a crab-like appearance. He has pincers for hands and six legs. He can open his skull plates at will to reveal his brain, which is pink in color.
In John Smith 10, he has his UAF appearance, until Omniverse, where he gains his Omniverse appearance.
In Jane Smith 10, she has the Omniverse appearance. She has pink cloth and pink eyes.
Brainstorm is the first alien used by Jane. She has a more feminine design, and is of her original 10. While decent in battle, she is used more to think logically through a scenario, especially when Jane's own emotions inhibit this ability.
Bright Man is the version of Brainstorm that appears in Dimension 23 by Megaman. He has light blue eyes, and his body is a bluish color. He has the Mega Buster for his left hand, and wears the Mega Tech armor. He retains his lightning abilities, and the lightning that he shoots from the Mega Buster is lightning that causes the opponent to levitate.
