Big,
green,
bald DC Comics superhero. Born on
Mars, oddly enough. Has a wide
variety of
superpowers, including
flight,
super-strength,
super-speed,
telepathy,
shapeshifting, and "
Martian Vision" (
heat vision with the
serial numbers filed off). He's also got a
weakness/
phobia about exposure to
fire. His
real name is
J'onn J'onzz (pronounced "
John Jones" -- how
convenient), and he spends his
free time shapeshifting into various
human disguises, giving him whole bunches of
secret identities.
The Martian Manhunter is one of those
grim,
brooding guys, though he's sometimes shown a really
wry sense of humor. His classic
costume consists of a blue
cape, blue
undershorts, and red cross-your-heart
suspenders -- he would not look
out-of-place stripping at a bachelorette party. His more recent costumes tend to be more modest. He loves
Oreos -- but DC isn't allowed to use that
trademark, so they just call them
Chocos.
Generally considered the last surviving inhabitant of
Mars, he is a
founding member of the
Justice League of America, but since there are already so many
superheroes in the
United States, he acts as the semi-
official superhero of the
Southern Hemisphere. He's so overwhelmingly
powerful, with so many different powers and abilities, he really should be considered the most powerful being in the DC Universe -- but no writer has ever really been able to figure out how to write him and make him
interesting -- and to make his
personality stick from one comic to the next. So he's mostly a
background character.