Ice Warrior

Ice Warriors are a race of Martian humanoids which evolved several thousand years before mankind. The majority of their civilization has left their homeworld en masse at some point, due to Mars' climatic changes rendering it increasingly less habitable.

Biology
Ice Warriors are reptilian humanoids, though their scaly skin is usually hidden under scale-like armour. They are taller than average humans, often around 7 feet in height. Clamp-like hands are present, often mounting sonic weaponry. It is rare for an Ice Warrior to remove his or her helmet; however, underneath it they have flattened, reptilian faces, with long tongues and deep red eyes. The lifetime of an Ice Warrior is long, apparently about 300 standard years. Females are of a slighter build, and have a dorsal crest (presumably to attract males).

As they come from a cold environment, extreme heat is particularly dangerous to them. Due to the different gravity, pressure and atmosphere on Earth, they move more slowly and their voice is more of a strained hiss while in Earth-like areas.

They also possess immense strength, as Grand Marshal Skaldak (outside of his suit) was able to easily overpower and dismember several humans, whilst trying to escape a damaged and submerged submarine.

Culture and society
Ice Warriors were raised to display a strong sense of personal honour. As an example, after the Third Doctor saved the life of the Ice Lord Izlyr, he felt obliged by duty to help the Doctor escape. Ice Warriors also had a strong dislike for lying, though they would do so in serious situations. They also believed that a victim of murder would not rest in peace until their killer had atoned for the crime. During the ritual blood duels, Ice Warriors often spat at their opponent's face in the challenge. Terrorism was considered anathema, and Ice Warriors typically would not resort to such attacks.

The strict code of honour descended from the time of the early Martians before they became a warrior species and their planet began dying. At that time, they only hunted for food but did not fight one another nor did they experience warfare. In fact, the word "warrior" was unrecognised in that era and instead their belief in honour meant that they operated under a "gift economy"; this was a system where people did not pay for things but instead were given freely with the receiver giving something in return (bartering). In these early years, the Martians were more involved in the arts and the crafts rather than with military affairs. In time they began to slowly change after the disastrous climatic changes and the deaths they suffered, but were always considered a reasonable people. They were also a heedlessly proud people who refused to admit to the presence of an issue, even if it was of great severity.

History
The Ice Warriors began their history as small turtle-like creatures, they where uplifted and turned into a slave race by the Gandorans, eventually, the Ice Warriors rose up and wiped out their masters, creating a large system wide empire and it is said that at that time, Ice Warriors cities sprawled across the surface of Mars.

As the martian atmosphere began to thin, the Ice Warriors went beneath the surface and built biomechanical suits and they tried intensely to attempt to reverse, and later survive the beginning of the twilight of Mars, they became more aggressive and militaristic around this time as a means of survival and most Ice Warriors either went to Demos to observe their closest neighbour, Earth, and other either found their own means of escaping to other star systems as a means to start anew far from their dying home, or went to a space station which would some day be known as Phobos, a great portion of the Ice Warrior population however chose to stay on Mars and went into suspended animation beneath the frozen irradiated surface.

In the Earth Year 800AD, a virus known as The Flood appeared in the remaining unfrozen water and the last Ice Warriors on the surface sealed the virus, and the rest of the unfrozen water, in a glacier in the Gusev crater, after this, it is believed all Ice Warriors on the Martian surface either escaped, went into hibernation, or died alone in the frozen desert.

In 1881, the Empress Iraxxa was awoken from her age old slumber and briefly came into conflict with a group of British imperial soldiers, when the Ice Warrior hive gained knowledge that their homeworld was dead, they used tech, along with assistance from The Doctor in his twelfth incarnation, to make contact with the Alpha Centaurans, who they maintained good relations with for centuries to come.