S1E50
Keeping Up with the Kryptonians
⚠ Spoiler alert This recap gives away what happens in this episode.
Episode Summary & Review
Summary
Mister Mxyzptlk alters history so that Supergirl and Superman are respectively a ditzy actress and a Kaznian enforcer that never met. Now with the rest of the League nonexistent, the only one left to save the day is Booster Gold.
Our Take
A hall of fame episode. If you sample one episode of Justice League Action, make it this one.