Bethian

Bethians were a tribal space-faring race that colonized Mars with the help of the Night Sentinels. The created the city of Hebeth.

Their city was attacked by a Demon outbreak, and stopped with the Doom Slayer's help (they designated him their Hero, and honored him by making a statue depicting the Praetor Suit (Artifact U9)).

Thousands of years later, they would be come to be known as Martians, as their ancient colonies were dug up at Site 1 and Site 3, and others dig sites under the surface of Mars.

Remains of their ancient city were exposed when Mars Core was opened up to the surface of Mars.