Silver Banshee makes her debut in this photo released by Entertainment Tonight.
Played by Italia Ricci, she will first appear in the more earthly person of Siobhan Smythe. Hired by Cat Grant as a second assistant, she will tussle with Kara in the office before the two match wits and powers in their costumed identities.
Ricci will debut on Monday's episode as Smythe, but Silver Banshee will appear in a subsequent episode.
Supergirl airs Mondays on CBS.