Elektra

Elektra is:

an alternative spelling of Electra, the name of several figures from Greek mythology, but most usually referring to the daughter of Agamemnon and Clytemnestra, who is the title character of one of Sophocles' seven extant plays.
a play by Hugo von Hoffmansthal, based on the Sophocles' play Electra
an opera by composer Richard Strauss with libretto by Hugo von Hoffmanshtal based on his play.
a recording company
Elektra is a fictional Marvel Comics character