The hip-hop veteran will voice a character called Kenny The Cat in an episode which will air in the U.S. on Saturday (29Mar14).
David Bowie, Victoria Beckham, Johnny Depp and Ray Liotta are among the stars who have previously voiced characters for SpongeBob.
Biz Markie, real name Marcel Theo Hall, is no stranger to Tv - he previously had small roles in In Living Color, Eve and Crank Yankers, while he also makes frequent appearances on another popular kids' show, Yo Gabba Gabba!.
The mystery woman will be receiving some ‘freshly picked flowers’ from the Irish actor this Valentines Day.
James Corden’s Carpool Karaoke is becoming quite popular and celebrities appear...