Casyo "Krept" Johnson and Karl "Konan" Wilson are London rap duo Krept & Konan. The two had spent several years building a solid reputation in the U.K.'s underground grime scene before releasing their debut, Young Kingz, in September 2013. The success of their freshmen LP, particularly the hit single "Don't Waste My Time," earned them a record deal with Virgin EMI Records. (Photo: Andy Buchanan/AFP/Getty Images)