IMx, formerly known as Immature, is an American hip-hop and R&B boy band, and brainchild of record producer Chris Stokes. Its members include Marques "Batman" Houston (born August 4, 1981), Jerome "Romeo" Jones (born October 25, 1981), and Kelton "LDB" Kessee (born January 2, 1981.) Houston, Jones, and Kessee are all natives of Los Angeles, California. As Immature, the group released two Gold certified singles accompanied with two Gold certified albums. They followed this with a Gold certified return as Imx in 1999.