The Mars People
are aliens from space that are in a plot to take over Earth in the Metal Slug
universe. They are similar to squids, using their tentacles as a form of
movement, and a strange fighting style which involves gas and a laser pistol. In
Metal Slug 2, they appeared as enemies near the climax of the game and
their mothership is fought as the final boss, but they were defeated by the
alliance consisting of the Peregrine Falcon Strike Force and General Morden's
army after they betrayed Morden.
In the Metal Slug X remake they appear as enemies earlier in the game.
They tried again in Metal Slug 3, abducting Morden and one of the members
of the Peregrine Falcons in the final level (which ever one the player uses will
be abducted), only for the Peregrine Falcons and Morden's army to take the fight
to their mothership and defeat them, and their leader Rootmars.
In Metal Slug 6, the Mars People, Morden, as well as his rebel army and
the Ikari Warriors, join forces with the Peregrine Falcons to fight a new alien
invader who, ironically, feed on the Mars People. In the game, after Stage 2,
the Mars People become the players' allies; some are even hostages. Mars People
made their fighting game debut in SNK vs. Capcom: Chaos as a hidden
character and later in Neo Geo Battle Coliseum as a playable character
since the beginning and, parodically, his partner in this game is Marco
Rossi, who has a special ending picture in NGBC playing with this team.