Captain Amelia captained the spaceship RLS Legacy in an expedition to find and retrieve the lost treasure of ancient pirate Captain Flint, hid on the legendary Treasure Planet. The expedition was sponsored by astrophysicist Dr. Delbert Doppler, with whom she developed a romantic relationship and eventually married, having four children.

A mammalianoid humanoid, presumably belonging to the same species as Doppler or a similar one at least, Amelia is an experienced officer, with an air of authority and envious agility.

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