The name Flex refers to 9 different artists/groups. 1) Flex is the name of the Panamanian singer who's debut album "Te Quiero" is described as “Romantic Reggaeton". His other stage name, which he still uses in most Latin American countries, is Nigga. 2) Flex is also the name of a group out of Petion-Ville, Haiti whose music style is a mix of Rap, Ragga, Dancehall, R&B, Soul. Throughout its history the band has seen members come and go. Some of the artists who were a part of Flex are: King D, BIC, T-Danash, Ashte..