The M Continuum is the extradimensional plane of existence that is home to the omnipotent race known as "the M". The term is also used to refer collectively to the M themselves. They are considered the "universal" balance to the Q Continuum and supposedly appeared in the universe after the manifestation of the Q. No one except the Q and the M have seen the M continuum, but it is presumed to have most, if not all the same properties as the Q Continuum. It is "next door" to the Q Continuum.