Prerequisite: Citadel: Leviathan III (Mass Effect 3)
This rock planet is only known from space probes, and there are no records of its exploration. It appears to have a moderate atmosphere of hydrogen and helium over an icy surface.
- Arion may refer to two figures in Greek legend: a poet known for his rescue from pirates by dolphins, or the twin brother of Despoina and son of Poseidon and Demeter.
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