Supergirl season two is also adding recurring roles for Katie McGrath as Lena Luthor, Floriana Lima as Maggie Sawyer, Lynda Carter as the President of the United States, and Tyler Hoechlin as Superman.
First appearing in 1959’s Action Comics #252, Metallo has gone toe-to-toe with the Man of Steel on multiple occasions.
The character is set to appear in at least two episodes this season, starting with the premiere episode.
If you missed an episode of Supergirl, or just need a refresher of what happened, you can read our weekly recaps by clicking here.