Brainstorm is a never-ending font of ideas. Whether he's in the middle of a battle or consciously working on another of his projects, new ideas are the background noise of his mind, sometimes to such an extent that his brain will overheat. In his zeal to see these ideas realized, Brainstorm sometimes forgets about things like "basic safety" and "proper experimental procedure". He will happily hand out new and untested inventions to less-than-responsible comrades for field-testing. His inventions range from useful biotechnology, to outlandish anti-personnel weaponry, to devices that harness the bizarre and unthinkable.
Brainstorm is at least partly responsible for developing the Headmaster process. It's sometimes hard to tell how much of it was his doing and how much was his Headmaster partner Arcana's, the two work together so seamlessly.
Sometimes he is also known as Genitus.
His alt-mode is a Cybertronian Jet.