Diallo Riddle plays Stevie on the new NBC comedy series "Marlon."

Diallo recently appeared in several episodes of the hit HBO series "Silicon Valley." He and his creative partner, Bashir Salahuddin, developed the comedy "Brothers in Atlanta" at the network as well.

Diallo was a writer on "The Maya Rudolph Show" as well as NBC's "Late Night With Jimmy Fallon," where he regularly performed in sketches. Prior to his gig on "Late Night," he and Salahuddin wrote for Comedy Central's "Chocolate News" with David Alan Grier. They also created the critically acclaimed web series "The Message" (HBO Online) from which came such web sensations as "Condi Rice Raps" and "Poor Man's Hogwarts."