The Green Martians are one of the many native inhabitants of Mars.
John Carter was captured by the Green Martians when he first arrived on Mars and subsequently became Prince of Mars and leader of the Green Martians.
The Green Martians were among the many native Martian races fell victim to the alien invaders known as the "Mollusc". Led by John Carter, the Green Martians were among the major Martian coalition forces that fought back against the invaders.
The Green Martians are fifteen feet tall (males) and twelve feet tall (females), have four arms and eyes mounted at the side of their heads. They are nomadic, warlike and barbaric, do not form families, have little concept of friendship or love and enjoy inflicting torture upon their victims.
Their social structure is highly communal - they have no concept of private property - and is rigidly hierarchical, consisting of various levels of chiefs, with the highest office occupied by an all powerful Jeddak. However, the title of Jeddak is obtained by mortal combat, rather than hereditary means. They form tribes, which war among one another constantly. They ride aggressive animals, thoats, and armed themselves with swords, lances and firearms which use 'radium' ammunition.
The Green Martians were created by Edgar Rice Burroughs and first appeared in A Princess of Mars.