Martian

A Martian was an inhabitant of the planet Mars, referring to more than one species on the planet.

Native Martians
Several native Martian creatures, such as the Ice Warriors, evolved on Mars, (TV: The Ice Warriors) as did many other Martian lifeforms, such as Martian fungi. (TV: The Seeds of Death) Sentient indigenous species on Mars included the Ice Warriors, the Gandorans, (AUDIO: Lords of the Red Planet) and another type simply called "Martians." (PROSE: Enter Wildthyme) The Eleventh Doctor referred to the Ice Warriors as "the Martian race". (TV: Cold War) There was also a native virus present on Mars. (TV: The Waters of Mars)

Human Martians
By the 22nd century, Mars had been colonised by humans, who, according to one account, pushed the native Ice Warriors into poverty. (PROSE: Fear Itself) Another account claimed that humanity had colonised Mars unimpeded when — in the words of Harold — after "something to do with T-Mat on the Moon", "centuries" before the 23rd century, a whole fleet of Ice Warriors were — according to what Gregson Grenville had learnt in school — "all melted when their invasion fleet spiralled into the sun".

This account showed extant Ice Warriors, but all were in suspended animation for — according to the Eighth Doctor — "many millions of years" during the 22nd century. (AUDIO: Deimos)

According to another account, the Tenth Doctor described the Ice Warriors as "legends on Mars from long ago" after the first off-world human colony was founded on Mars in 2058. (TV: The Waters of Mars)

Once humanity had made Earth itself uninhabitable, the Usurians saw to it that the humans could move to Mars. (TV: The Sun Makers)

Many humans considered themselves "Martian" after colonisation, as there came a point when humans were regularly being born there. Vel Karneen, commander of Space Army, identified himself as a Martian, for instance (PROSE: The Secret of the Mountain) — as did the second-in-command of the ADF, Reb Shavron. (PROSE: Terror Task Force)
 * For a more detailed history of human colonisation of Mars, see the separate article on Mars.

Martian droids
At some point, Martian droids were paid in something called "default". (TV: Bad Wolf)

As colloquialism
Prior to colonisation, many humans simply interchanged the word Martian for the term alien — much like "flying saucer" was used as a generic term for alien spacecraft. For example, Donna Noble referred to the Tenth Doctor as a Martian before understanding he was, in fact, a Time Lord. (TV: The Runaway Bride) Likewise, Lucie Miller suggested to Eighth Doctor that she could be a Martian if she was alien. (AUDIO: Blood of the Daleks)

When the Eleventh Doctor said the Cuculus were alien, Harry Houdini asked if they were Martians. (PROSE: Houdini and The Space Cuckoos)

Misidentified Martians
Ostensibly because of this penchant to imagine Mars as a likely source of alien life, some humans occasionally misidentified other species for Martians, just as Donna had done with the Tenth Doctor. (TV: The Runaway Bride)

Daniel Llewellyn, along with the whole world, thought that the Sycorax were from Mars until Major Richard Blake told him that Martians looked completely different. (TV: The Christmas Invasion)

Patrick also initially thought that the Centuripede came from Mars to read other people's mail. (TV: The Last Oak Tree)

Daleks Versus the Martians
The non-DWU story Daleks Versus the Martians featured Dr. Who, Susan and Louise from the movies, Dr. Who and the Daleks and Daleks' Invasion Earth 2150 A.D., encountering a different species of native Martians to those encountered by the Doctor in the Doctor Who universe.