Bulk and Skull started out as bullies at Angel Grove High School, usually targeting the Power Rangers in the 'B plots' of the episode. They were regulars at Angel Grove's Youth Center. Their actions were motivated by greed and ego in the first season. Wacky schemes abound (such as creating an obviously-fake kung fu style called "Cockroach Kung Fu" to attempting to catch fish or claiming reward money for themselves) always ends in failure and/or being humiliated. They are also frequently put in detention by Angel Grove High's somewhat-antagonistic but well meaning principal, Mr. Caplan.