The Great Saiyaman is Gohan's alter ego and an attempt to hide his true identity from his classmates when he attended school in Satan City. The Great Saiyaman was first born when Gohan transformed himself into a Super Saiyan in order to disguise himself as he fought some bank robbers on the morning on his first day to school. However, his classmates (and in particular, Videl) began to note strange similarities between himself and the mysterious "Gold Fighter" (as they described his Super Saiyan form). Concerned that his identity might be figured out, but wanting to protect the city from random crime, he approached Bulma and asked her if she could invent a device that could instantly change his appearance. With his new costume ready and easily accessible with the press of a button, he could now protect the city without his identity being easily discovered.