Starmen are enemies in Mother and EarthBound, and have many different variants. They are Giygas's main henchmen, and because of this, are very iconic enemies of the series.
Starmen in Mother are very common, first appearing in Spookane's hotel as a boss, disguised as a hotel worker, and becomes a regular enemy from that point on.
Starmen in EarthBound comparatively do not appear in their regular form as much as they do in Mother, only appearing in Stonehenge base. There are many other variants, however. Unlike most enemies, they travel by using teleportation, a trait shared with the similar Starman Super.
"The Starman often warps into the middle of the party to attack. This robot is the primary sentry in the Stonehenge base. Watch out for his beam weapon and PSI magnet attacks."
Just one kooky subset of the diverse cast of enemies in EarthBound, these strange creatures are aliens in the employ of Giygas. Variations of the Starman race include Starman, Starman Jr., Starman Deluxe, and Starman Super. They all use PSI powers, but their strength differs depending on the level on which they're found.
In Creatures Inc.'s Chailien franchise, one of the Chailiens is No. 81 Hirokacha (Japanese: ヒロカチャ) who is simply a human-like figure with a star for its head; a possible reference to the Starmen in MOTHER and EarthBound. Hirokacha appears in the Game Boy Color game Chee Chai Alien and the Game Boy Advance spin-off Nonono Puzzle Chailien.