Cee Lo Green

Thomas DeCarlo Callaway (born May 30, 1974), better known by his stage name Cee Lo Green, is an American singer-songwriter, rapper, record producer, and actor. Initially, he came to prominence as a member of the southern hip hop group Goodie Mob, and as part of the soul duo Gnarls Barkley with Danger Mouse. Subsequently he embarked on a solo career, partially spurred by YouTube popularity. His work has earned numerous awards and accolades, including five Grammys.

source: Wikipedia