Brimstone likes the simple things - food, flying, trashing Autobots. He leaves stuff like thinking, planning and noticing what's going on in the world around him to his pal Undermine, which is just as well because that tiny, little head of his contains a badly undersized CPU. Still, being dumb doesn't make Brimstone any less dangerous. In flight, he is totally silent, and his diamond-edged vanadium wing blades can pierce even the toughest armor.
Brimstone appeared in the following 14 cartoon episodes: