A German radio-navigational system
Elektra Natchios, usually known only by her first name Elektra, is a fictional supervillain and anti-hero from Marvel Comics. Created by Frank Miller, she first appeared in Daredevil #168 (January 1981).
Elektra is a one-act opera by Richard Strauss, to a German-language libretto by Hugo von Hofmannsthal adapted from his drama of 1903â€”the first of many such collaborations between composer and librettist. It was first performed at the Dresden State Opera on January 25, 1909, and remains a part of the standard operatic repertoire.