Who invented the deus ex machina?

Answer 1

The deus ex machina was firstly introduced by the Greek playwrights who used to call it ἀπὸ μηχανῆς θεός. Euripides made a massive use of this plot device in his works, and some think he could have been the one who actually invented it, though Aeschylus had already employed something similar in his Eumenides.

Answer 2

The concept of deus ex machina, meaning "god from the machine," originated in ancient Greek theater. It was a technique used by playwrights to resolve the plot through the sudden and unexpected intervention of a god or supernatural force. Euripides is often credited with popularizing its use in tragedies.