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Mars People 1: Beep boop?

Mars People 2: Beep boop boop bop!?
Mars People 1: Boop bap beep bop!

~ Two Martians communicate with each other shortly before fighting, in SvC Chaos.

The Mars People are major antagonists from the Metal Slug series, appearing as the main antagonists of Metal Slug 2 and Metal Slug 3; and Metal Slug 6 until the second stage. They are cephalopod creatures with olive green skin who presumably originate from the planet Mars and seek to conquer Earth for themselves.


Metal Slug 2

Seeking to conquer our world, the Mars People have made an alliance with the Rebel Army, providing them with alien technology to help them on their coup. However, they planned to dispose of them once they had accomplished their goal.

As the Regular Army soldiers make their way into Donald Morden's base in the north pole, the Mars People betray him, killing his soldiers and abducting him, trapping him inside the Dai-Manji. The Regular soldiers fight the UFO, but it attaches itself into the Rugname, the martian's mothership. The Dai-Manji is hit by a kamikaze soldier, so before it could start a chain reaction they detach it and flee for the time being, leaving Morden behind.

Metal Slug 3

They would return again, abducting Morden and leaving an impostor to control his Rebel forces. When the Regular Army soldiers defeat the impostor, it reveals itself and captures one of them, taking them to the Rugname in space.

The Rebels help the Regular soldiers by launching rockets to reach the mothership. Their combined forces fight the Mars People inside the Rugname, defeating Rootmars, which causes the mothership to start self-destructing. They succesfully rescue Morden and their comrade, but Rootmars escapes and confronts them on their descent to Earth's atmosphere, being defeated and falling to the bottom of the ocean.

Metal Slug 6

The Mars People once again return, again allied with Morden's forces, but as it turned out, they were trying to fend off the Venusians, which feasted on them and would soon take over Earth. The three groups make a new alliance to fight against the new threat, defeating them after killing their king.

Afterward, whenever the Rebel Army and Morden are under grave danger, the Mars People will always save them, as they are recently seen rescuing Morden's soldiers with their UFOs after the Regular Army soldiers defeated the Kraken, the experimental weapon Worm Mecha Morden modeled after.

Other Appearances

SNK vs. Capcom: SVC Chaos

Mars People appeared in the fighting game as a playable character. Fighters who encounter them are stunned to respond and unable to understanding them because of their different language. Fighters see Mars People with different opportunities such as financial gain, researching object or only a thing only deserves to defeat/kill. Some of them tries to communicate them, such as Chun-Li, by speaking Korean, Japanese and Chinese, but doesn't succeed.

After Mars People defeats Athena/Red Arremer, the fighter Martian communicates with the other Mars People, and they attack and invade New York. The incident breaks the news and the Metal Slug once assembles to defeat them again.

NeoGeo Battle Coliseum

Mars People appeared in the tag-team fighting game, as can be teaming with various SNK characters including Athena, Marco Rossi, Hanzo etc.

In the ending, after the Martian defeats Goodman, it infiltrates WAREZ's communication center and communicates with the other Martians, becomes the victor of Battle Coliseum.Three days after the Battle Coliseum, the Martian prefers to stay in Earth and don't go back Mars, becomes a waiter at an eatery in Osaka's Suita City and gets the 'Marpy' name. When they asked to him about going back to Mars, he claims that a ramen like the old man's can't get in Mars.



  • Rootmars - Leader
  • Mars People Neo (Marty) - Commander

Martian Soldiers

  • Gray Mars People
  • Brown Mars People
  • White Mars People
  • Mars Rangers
    • Mars People Tank
    • Mars People Attacker
    • Mars People Healer

Human Associates

  • Professor
  • Percier
  • Halle
  • Bonny
  • Harriot
  • Clario
  • Leone
  • Pauline

Artificial Super Soldiers

  • Gemini Twins
  • Clone Abby
  • Clone Betty
  • Code Marionette:Un
  • Claris
  • Unsigned

Flying Machines

  • Mini-UFOs
  • UFOs
  • Big Eyes
  • Dai-Manji

War Machines

  • Mars Mecha
  • Hopper Mecha
  • Ring Laser Mecha


           Mslug logo.png Villains

Rebel Army
General Donald Morden | Allen O' Neil | Allen Jr. | Abigail | Beatriz | Abul Abbas | Vita | Navy | Nova | Rapid | Shizuka | Destrade | Julia | Aisha | Huracan | Izabella | Grazia | Loretta | Norah | Chloe | Dion | Edda | Vicky | Romy | Dolores | Emma | Kriemhild | Katalina | Conny | Nantes | Padwah | Growth & Cline | Naomi | Alesha

Mars People
Rootmars | Professor | Marty | Percier | Gemini Twins | Ariadna | Clone Abby | Clone Betty | Halle | Bonny | Pauline | Leone | Clario | Unsigned

Amadeus Syndicate
Amadeus | White Baby | Iron Fortress | First Baby

Ptolemaic Army
Avatar of Evil | Ptolemaios | Dragunov | Yoshino | Caroline | Veronica | Mira | Towa | Sisilia | Simon | Miharu | Chunyan | Sho | Beecham | Owen | Damian | Maria | Sally | Achetto | Lucy | Phoebe | Josette | Mizuna | Svetla

Invader King | Odette | Annette | Nowan | Franke | Bersek | Rillacle | Teleko | Schwarz Metzelei | Fedeln Metzelei | Bloom Metzelei | Geweih Metzelei | Odile | Purple King | Barbeln | Biene Goldenes | Drache Goldenes | Swordeist

Phantom Squad
Hilde Garn | Macba | Kanan | Lt. Wired

Oguma Corporation