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, where the group was formed. The group released four albums under the Immature moniker: On Our Worst Behavior (1992; the only album to include original member Don "Half Pint" Santos, later replaced by... [more on Wikipedia]