Unfidelz is an alternative hip-hop duo comprised of Relapz and Biazed.

Relapz' roots stem from the underground hip-hop duo Randum ax uv Vilenz (RaV). He has been emceeing since the late 90's.

Biazed started off as the bass player/lead guitarrist in the band Downside Up. He's been on the music scene since 1997.

Both musicians have known each other since the early 90's and formed Unfidelz in the summer of 2003.