what is an eidolon
For other uses, see Eidolon. In ancient Greek literature, an eidolon (plural: eidola or eidolons) (Greek Îµá¼´Î´ÏÎ»Î¿Î½: image, idol, double, apparition, phantom, ghost) is a spirit-image of a living or dead person; a shade or phantom look-alike of the human form. The concept of Helen of Troy's eidolon was explored both by Homer and Euripides.