Paul Johnson is the late father of Rainbow Johnson. He was a hippie who lived in a poop bus along with his wife and loved the idea of having a black wife so much that his bumper sticker says "black wife." He was the dad of Rainbow, Santamonica, and Johan. He passed away in the episode "Dream Home" of Season 4 finale. His death was the event that started the rebuild of Bow and Dre's marriage.