Years on Def Jam: 2007-Present
Signature Def Jam Song: "Make Me Better" (2007)

Consistent hit maker and punchline king who bubbled quietly for the last 15 years. Fab didn't sign to Def Jam until about midway through his career, but since he's gotten there he's made the most of it. And since he's always had a knack for rapping on R&B songs, he's scored some major hits by teaming up with the label's R&B stars Jeremih (for "My Time), Ne-Yo ("Make Me Better"), and The-Dream ("Throw It In The Bag").