The name Flex refers to four different artists/group.

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. Throughout their history they band have seen members come and go. Some of the artists who were a part of Flex are: King D, BIC, T-Danash, Ashte...
The band has released 2 albums before each members went their separate ways: "Work So Hard" in 1998 and "Pouki?" in 2001.

3) Flex is also a member of the Dutch Rap Group THC. His Younger brother RBDjan is also in that group which focuses mainly on Dutch Gangster rap.

4) Flex is a Canadian hip hop artist from London, Ontario.