Goeis are Galagan butterflies and one of the main common gorgs of the Galaga forces. Designed as being more adaptive than their Zako counterparts, The Goei butterflies are often used to act as the guards and escorts of Gorg Boss Galagas. Their appearance resembles that of a slightly alter Earth-Butterfly. In some stages in Galaga Arrangement, there are some Goeis that are recolored to green.