In the narratology of A. J. Greimas, one of six basic categories of fictional role common to all stories. The actants are paired in binary opposition: Subject/Object, Sender/Receiver, Helper/Opponent. A character (or acteur) is an individualized manifestation of one or more actants; but an actant may be realized in a non‐human creature (e.g. a dragon as Opponent) or inanimate object (e.g. magic sword as Helper, or Holy Grail as Object), or in more than one acteur. Adjective: actantial.