Marcel Theo Hall (April 8, 1964 – July 16, 2021), known professionally as Biz Markie, was an American rapper, singer-songwriter, DJ, and record producer. Markie was sometimes referred to as the "Clown Prince of Hip Hop".
On Nickelodeon, he was one of the recurring guest stars on Yo Gabba Gabba!. He also guest star on SpongeBob SquarePants as the voice of Kenny the Cat.
On July 16, 2021, Markie died from type 2 diabetes at the age of 57.