According to
Forge,
mutants living on these alternate Earths have lost their powers due to
M-Day, as stated in "
Endangered Species"; however, this mass depowering has not been seen in any of Marvel's current alternate reality publications such as
Exiles, the
Ultimate Marvel titles,
Amazing Spider-Girl, the
Marvel Adventures titles or
GeNext, though it is possible that the issue of time may be related to their exclusion. This was apparently retconned during the "
X-Men: Messiah Complex" storyline, where Forge stated that all mutants in possible future timelines were depowered, not in parallel universes. This, in addition to A.R.M.O.R.'s observation that
Lyra arrived from an alternate reality indicates that the topology of the Marvel Multiverse is based on new realities branching off from key nodes of a timeline instead of strictly parallel dimensions.
Other dimensions Not every alternate dimension is an entire independent reality, but instead maintain a parasitic relationship to a parent reality. Others can exist outside the multiversal structure altogether.
Pocket universes • '
Counter-Earth (Heroes Reborn):' A pocket dimension where
Franklin Richards stored many of Earth's superheroes after the events surrounding the appearance of
Onslaught.
Doctor Doom saved Counter-Earth from the unstable pocket dimension and placed it in an alternate orbit of
Earth-616 on the other side of the Sun. •
The Hill: A dangerous pocket dimension used by
Mikhail Rasputin after flooding the
Morlock tunnels. Rasputin brought all Morlocks to the Hill to raise them in a survival-of-the-fittest mentality. In this dimension, time runs several times faster. While in Earth-616 only one or two years passed, more than 10 years passed in the Hill.
Marrow and the other
Gene Nation members grew up in this dimension. •
The Microverse: Originally, many microverses existed within the Marvel Multiverse until they were made into one Microverse following an unseen conflict between Baron Karza and
Thanos. •
The Mojoverse: A dimension where all beings are addicted to gladiator-like television programs. Ruled by
Mojo and home to
Spiral,
Longshot, and the
X-Babies. •
The Negative Zone: Mostly uninhabited, it is a universe parallel to Earth's with many similarities. All matter in the Negative Zone is negatively charged. •
Otherplace: Also known as "Limbo" or "demonic Limbo". A magical dimension of demons which was historically ruled by
Belasco and primarily featured in the
X-Men comic books. •
The Void: A pocket dimension that exists inside
Shaman's medicine bag. •
Soul World: A pocket dimension that exists inside the Soul Gem.
External realities •
Avalon: Also known as
Otherworld, this realm is an access point to the entire Marvel Multiverse used by the
Captain Britain Corps. Also home to the Celtic gods and
King Arthur. •
The Darkforce Dimension: This dimension is connected with the characters
Cloak, who uses the dimension for teleportation, and
Mr. Negative. This dimension also includes, but is not limited to, Spotworld as used by the supervillain
Spot and the Brimstone Dimension that
Nightcrawler travels through when he teleports. •
Limbo: Also known as "true Limbo" or "temporal Limbo"; outside of time, historically ruled by
Immortus and the location to which
Rom the Spaceknight banished the
Dire Wraiths. •
The Panoptichron: Home base of the reality-hopping
Exiles, structurally dissimilar, but functionally similar, to Avalon. ==Definitions==