- This article is about the Life on Mars minifigure. For the Anacondrai general, see General Arcturus.
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Arcturus wears a red suit and had red eyes. His skin is a different shade of green than most of the other Martians, and this skin shade is unique to him.
Arcturus was a spy for the Canyon Martians, who were plotting to steal all of the Biodium so Riegel would surrender Mars.
- Arcturus is one of only two martians to have a different skin colour than Dark Turquoise, the other being Riegel.