Esper

Esper may refer to:
 * The recurring summoned creatures.
 * The action ability from Final Fantasy Tactics.
 * The name for the Mutants in the Final Fantasy Legend series.

Etymology
"Esper" is a recurring term in science fiction, used to describe an individual with paranormal abilities. It was original coined by Alfred Bester in his 1950 short story "Oddy and Id", deriving the word from the abbreviation "ESP" (Extrasensory perception).