Four is the host of BFB. His co-host is X and he hates Two. He is a blue algebralien who's body is shaped like the number four. He is chaotic, sadistic, selfish, prone to having temper tantrums and is stubborn. He also has surreal mannerisms. His best friend is X and is likely to be his love interest. He is very powerful and his powers include screeching, zapping, manifestation, levitation, e.t.c. After BFB, he became a chef in Two's hotel.