Kevin Ferguson (born on February 8, 1974), better known as Kimbo Slice, is a Miami, Florida-based street fighter turned mixed martial arts (MMA) fighter. He first appeared in several filmed underground fights which have spread primarily on the Internet. Kimbo has since left street fighting behind and is now putting his efforts towards becoming a professional mixed martial arts fighter. Rolling Stone called Slice "The King of the Web Brawlers"
Kimbo Slice began his career in unsanctioned street fights. A notable street fight was with Sean Gannon, a former Boston Police officer who trains in MMA. In a brutal fight Kimbo lost for the first time.  The popularity of the fight, which was distributed throughout the internet, propelled both men into the MMA spotlight.
To prepare for sanctioned MMA fights, Slice was trained by retired MMA fighter Bas Rutten. Slice made his sanctioned MMA debut against former WBO Heavyweight champion boxer Ray Mercer at Cage Fury Fighting Championships 5, in Atlantic City on June 23, 2007. The match was scheduled as a three-round exhibition utilizing all professional rules of MMA combat. Slice defeated Mercer with a guillotine choke at 1:12 into the first round. In a post-fight interview, Slice stated that he would like to fight David "Tank" Abbott. Abbott, who was a spectator, stood up from his seat and accepted the call out. One of the matchmakers for CFFC asked Slice for his assurance so that an October 12 bout at Cage Fury Fighting Championships 6 between Slice and "Tank" Abbott could be organized. This event was later canceled due to a promotion dispute. On October 11, 2007, ProElite announced that they had signed Slice to a deal and that he would make his debut on the November 10, 2007 EliteXC. Originally set to make his professional MMA debut against Mike Bourke, the reformed street fighter was set to face Bo Cantrell after Bourke sustained a shoulder injury. Kimbo defeated Cantrell 19 seconds into the first round by submission due to strikes.
Slice will be featured on The Iron Ring, a new television series airing on BET which features MMA prospects. Slice will be a part of the selection process for the participants.
On February 16, 2008, Kimbo fought Tank Abbott in the main event at EliteXC: Street Certified. He won by KO 43 seconds into the first round due to strikes. At the fight his weight was announced at an all-time low of 234lbs, a far cry from his street fighting days of 280lbs.
On May 31, 2008, Kimbo fought in the main event of the first ever mixed martial arts event shown on prime time network television, EliteXC: Primetime. Though one of the judges had each fighter winning one of the first two rounds, Kimbo's opponent James Thompson won both on total points by repeatedly taking down Slice and grounding and pounding. In the opening seconds of the third round, however, Kimbo threw a haymaker to Thompson's left ear, which ruptured Thompson's cauliflower. This was soon followed by three unanswered punches to a standing Thompson, which led to a referee stoppage and a controversial win for Slice. Fellow EliteXC competitor Brett Rogers was particularly critical of Slice's victory, calling Slice's performance "garbage" in a post fight interview.
A Kimbo Slice vs. Ken Shamrock fight was signed for October 4, 2008 to take place at the BankAtlantic Center in Sunrise, Florida as part of CBS' "Saturday Night Fights". Seth Petruzelli replaced Shamrock due to a cut to the left eye during warm ups only hours before the fight was to take place. Petruzelli defeated Slice by TKO 14 seconds into the bout.