Mercury is presumably uninhabited, although a number of alien beings have claimed to originate from the planet. However, it could be that -- like many other aliens who visited Earth in the past -- these aliens were from another planet and either lied about what planet they originated from or temporarily colonized Mercury.
In the 31st Century of Earth-691 a race of Mercurians lived on Mercury, however they were really biologically engineered human beings. Among their number included Nikki of the Guardians of the Galaxy.
In the Earth-5106 reality the planet Mercury is inhabited by as race Mercurians of Mercurians who have mercury for blood as well as two heads with two personalities: good and evil. The dominant force depending on the temperature of their blood. It is also the burial ground/memorial for John Dixon a rocket pilot who saved the Earth from annihilation. By the year 2000 Mercury is ruled by Mer-King and the planet is part of the Galaxy council. When the Sun drifted too close to Mercury it caused the Mercurian's evil personalities to become dominant. The anarchy was quelled by the Space Squadron (led by John Dixon's great grandson Jet Dixon) until a magnetic device could be built to push the sun back to its original position.
- 11 Appearances of Mercury (Planet)
- 3 Minor Appearances of Mercury (Planet)
- 7 Media Mercury (Planet) was Mentioned in
- 1 Images featuring Mercury (Planet)
- Location Gallery: Mercury (Planet)