Lego Space Space subtheme in which the entire theme is "good", "bad", or "civilian". Life on Mars is a space theme released in 2001, around a time of increased curiosity about the red planet. The theme revolved around the concept of the lifeforms that could possibly exist on Mars. This was the first Space theme to feature two types of minifigures: human astronauts and Martian aliens. The sets denote peaceful coexistence between the two species on the planet Mars. The "Life on Mars" theme pioneered several unique aspects in Lego in general. It was the first Lego theme to utilize a pneumatic
Revenge of the Mysterons from Mars survey the Mysterons' planet, Mars, with a space probe is threatened when a scientist attached to the project is killed and duplicated by the Mysterons ("Shadow of Fear"). After the Lunar Controller boldly declares the Moon's independence from Earth in its fight against the Mysterons, Captains Scarlet, Blue and Lieutenant Green are dispatched to the colony Lunarville 7 to investigate reports of an unidentified complex being built on the far side of the Moon ("Lunarville 7"). After reporting back to Cloudbase, Scarlet, Blue and Green return to the Moon to remove the power source from the Mysteron complex in Crater