It is interesting that a drawing of a Sova is present in Metroid Prime 2: Echoes. Its presence among other Aetherian creatures is strange, as Aether seemingly lacks a super-heated area. However, if the Sova was planned to be included in Echoes, Retro Studios might have retooled the creature to survive in the Agon Wastes or the Torvus Bog, or the Dark Aetherian counterparts of these areas.