An Eidolon is a facsimile made out of tiny, individual particles of dark matter. Alone, they look like small blue beads, but when they join together, they can be programed to become almost anything, a Slipfighter, a Knights of Genetic Purity soldier, people, and even large warships of any race. Bartolome Naz sent several Eidolons to the Andromeda to deliver a message to Dylan Hunt and Tyr Anasazi. ("And Your Heart Will Fly Away")
- An eidolon is an "image, idol, double, apparition, phantom, ghost" and a spirit-image of a living or dead person, a shade or phantom look-alike of the human form.
- In "Star Wars", the Eidolon refers to Eidolon Base and the Eidolon (Strike-class).
Harper: It's a highly complex and very cool structure made of dark matter particles. These things working together can simulate almost any image of almost any size.
Dylan: It hit pretty hard for a simulant.
Holo-Rommie: That's because it can also simulate mass.