Earthia

アージア

A member of a plant-like alien species, Earthia is the mother of Cosmo and Galaxina, and the wife of Lucas. Earthia eventually took on the form of a giant tree and would end up giving birth to her last child (Cosmo). As she grew weaker, Earthia was ultimately killed when the Metarex found her ship and attacked and killed everyone on board, except for Cosmo.

Spoiler