Williams has appeared on numerous television shows including CSI, JAG, The Shield, Weeds, Reno 911!, Californication, and popularly as fictional rap artist Krazee-Eyez Killa on Curb Your Enthusiasm.

On February 3, 2010, he made an appearance on his older sister Vanessa Williams' series Ugly Betty as Wilhelldiva Hater, a female impersonator of her character.

In 2016, he began starring as the bodyguard of tech billionaire Gavin Belson on the HBO comedy series Silicon Valley.

[citation needed] Williams was raised Roman Catholic[1][2] and is a graduate of Georgetown University.

[3][4] In November 1990, Williams was a contestant on the NBC game show Classic Concentration, where he won $31,464 in cash and prizes, including a $15,000+ Jeep Wrangler.