The Space Marines are the most well-known and popular characters in the fictional universe of Warhammer 40,000. They are one of the playable factions that can be used, in the form of 28mm scale miniature models. They wear mechanised suits of armour and have modified genomes that grant them superhuman strength and endurance.
See also: Warhammer 40,000: Space Marine, Chaos (Warhammer), Warhammer 40,000, Warhammer 40,000: Chaos Gate - Daemonhunters, List of Games Workshop video games, Warhammer 40,000: Dawn of War.