He is a genius scientist who is the mastermind behind the Red Ribbon Androids, chief amongst them the bio-organic Cell. Dr. Gero is very cold-hearted, willing to stop at nothing to achieve his goals, he doesn't let people get in his way and even kidnaps other people to use in his experiments. Hates Goku. He fathered two children with his wife Vomi, one of whom was named Gevo.