Mr. X Is A Rapper From L.A,California Who Has Released An Album In 1996 Called "Mr. X" With Singles Like "Any Ol Sunday" & Plenty More A Really Good G-Funk Album From The Golden Age Rap Days Mr. X (aka Mister X, MisteriX, Domnu X) is also a VJ and lately DJ from Romania. For the DJ and music producing part he use his Romanian spelling name for Mister X: Domnu X. Mister X entered the video art scene in 2005, mostly on the drum and bass and breakcore music scene.