Leslie Kai Greene (born July 12, 1975), known professionally as Kai Greene or Kai L. Greene, is an American IFBB professional bodybuilder, personal trainer, artist, and actor. His most recent victory was the 2016 Arnold Classic. He came in 2nd place at the 2012, 2013 and 2014 Mr. Olympia competitions.
Greene was born and raised in Brooklyn, New York. From the age of six, he was raised in foster care and residential treatment centers. According to his online biography, his rapid physical growth and development drew the attention of his seventh grade English teacher, and since his behavior in school was troublesome, he was introduced to teenage bodybuilding competitions.
Greene became an enthusiastic bodybuilder, competing in the National Physique Committee (NPC) and aiming to move into the IFBB. He perceives his success in the NPC as mixed. Although he won the 1999 NPC Team Universe, he was disappointed and took a five-year break from competitions, before re-emerging in the 2004 NPC Team Universe contest, which he won again. This victory qualified him for a career as an IFBB professional bodybuilder.