Electra at the Tomb of Agamemnon; In Greek mythology, Electra was an Argive princess and daughter of King Agamemnon and Queen Clytemnestra. She and her brother Orestes plotted revenge against their mother Clytemnestra and stepfather Aegisthus for the murder of their father, Agamemnon. Electra is the main character in the Greek tragedies Electra by Sophocles and Electra by Euripides and has inspired various other works. The psychological concept of the Electra complex is also named after her.