Sudan Ahmeer Williams (born November 17, 1989) is an American rapper and record producer, better known by his stage name Iamsu! (sometimes stylized IAmSu!). Iamsu! has released various mixtapes in his career including Suzy 6 Speed, Million Dollar Afro with frequent collaborator Problem and the Kilt series. He is also known for featuring on LoveRance's "Up!", E-40's "Function", and Sage the Gemini's "Gas Pedal". He is also a member of the production team The Invasion and the leader of the hip hop group Heartbreak Gang.