He played Money Mike in Friday After Next, was a recurring guest on Wild 'n Out, portrayed Bobby Shaw in My Wife and Kids, provided the voice of A Pimp Named Slickback in The Boondocks and Seamus in Cats & Dogs: The Revenge of Kitty Galore, and portrayed Lord Have Mercy in Norbit.

[14] Later that year, one day after an incident at a Seattle bar - in which he reportedly acted threatening and violent, then resisted arrest - landed him in jail, he announced the end of his stand-up comedy career.

[17] Williams' November 16 performance at the Oracle Arena in Oakland ended after he engaged in a profanity-laced confrontation with a heckler, and was assisted off stage by his own security.

[19] On August 16, 2014, he returned with a new HBO special titled Katt Williams: Priceless: Afterlife, which was directed by Spike Lee.

"[22] In 2018, Williams released a new stand-up special on Netflix called Great America and shot in Jacksonville, Florida.

[9][10] In 2018, he played the character Willie in the season 2 premiere of Atlanta, for which he won the Primetime Emmy Award for Outstanding Guest Actor in a Comedy Series.

Williams has also used the stage name "Money Mike" when rapping for songs by such artists as Baby Bash, The Game, and Suga Free.

[27] On November 13, 2006, Williams was arrested at Los Angeles International Airport after a gun that had been reported stolen was found in his briefcase.

[28] On December 14, he pleaded no contest to a misdemeanor count of carrying a concealed firearm and was sentenced to three years' probation, ordered to pay restitution, and given credit for the three days he spent in jail.

The alleged victim said three women approached his tractor at around 4:30 p.m. local time and attacked him with rocks and dirt clods, causing him facial injuries.

[34] On December 2, 2012, Williams was arrested in Seattle after he allegedly got into a dispute at a bar in the South Lake Union neighborhood.

The resulting chase was halted due to safety concerns, and the bench warrant was issued after Williams narrowly missed several bystanders.

[38] On January 8, 2013, Williams was arrested at his Los Angeles home after failing to appear in Sacramento to answer the November 25 motorbike charges.

[39] On October 29, 2014, Williams and Suge Knight were arrested for the theft of a camera from a photographer in Beverly Hills on September 5.

[43][44] On April 27, 2016, Williams was arrested and charged with battery in Atlanta, Georgia, after allegedly throwing a salt shaker at the manager of a local restaurant.

The manager claimed to have been hit in the mouth with the salt shaker when Williams' group was denied preferential seating.

[45] On July 24, 2016, Williams was arrested on suspicion of battery after an altercation with a woman at the Sportsman's Lodge, a hotel in Sherman Oaks, California.

[46] On September 15, 2016, Williams was arrested in Fulton County, Georgia, on a charge of second-degree criminal damage to property, after having turned himself in on a warrant for failing to appear in court for the April 27 incident.

[49] Williams is a Christian and often wears a cross during his shows as a symbol of his faith, though he briefly joined the Nation of Islam while living in Oakland, California.