Pigero used to take care of a small group of orphans and protect them from social workers who would put them in an orphanage. After a chance run in with a young boy named Gohan, Pigero decided the orphans would be better off having the chance to be adopted into a family and left his chosen duty.

An orphan himself, Pigero has seen some rough times out on his own and eventually took up pickpocketing. His speed and natural agility lend themselves to the job nicely, as he's never been caught once. That all changed the day he met Yamcha, a former bandit himself.