Billy Blanks is a fitness instructor who runs a gym in Dimmsdale.
He is bald, dark-skinned, and strong looking. He wears a teal muscle shirt and black pants. He also wears large shoes.
While Timmy Turner was practicing his kung-fu to beat up Francis around Dimmsdale, he wandered into Billy Blanks' gym and beat up a few of the people who were exercising. Billy was impressed with Timmy's work, and told Timmy to "give him five". Timmy though he meant a high-five, until Billy said "...hundred push ups", and then made Timmy do push ups with cinder-blocks on his back, slashed by Billy while playing Piano with bare left foot