Roy Koopa was a Koopa male. A Prince of the Koopa Kingdom, he was a son of Koopa King Bowser Koopa. After Seigal Canopus unwittingly triggered a coup, Roy was one of only two members of the Koopa Kingdom Royal Family to escape. Following the Cataclysm, he was captured by the BeanBean International Agency in the BeanBean Kingdom and imprisoned. Roy was later freed by the Sarasan Revolution and joined the Sarasan Empire's army as a Colonel.