Immature (later known as IMx) is an American R&B boy band, managed by 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), all natives of Los Angeles, California, where the group was formed. The group released four albums under the Immature moniker including "On Our Worst Behavior" in 1992 which included former member Don "Half Pint" Santos, later replaced by Kessee, "Playtyme Is Over" in 1994, then "We Got It" in 1995 and finally in 1997 released the album, "The Journey".