In the world of U.K. grime, few artists have had the longevity or influence of rapper and producer Wiley. In the early '00s, Wiley formed the garage supergroup Roll Deep with Dizzee Rascal, Tinchy Stryder, and other MCs, and his dancehall-influenced beats and hardcore rhymes were pivotal in establishing grime as a distinct genre. When he's not venting his anger on Twitter, he's scoring Top 10 hits as a successful solo artist, both in the underground and mainstream scenes.