Appropriately titled “Mr. & Mrs. Mxyzptlk,” the episode is set to air Monday, February 20 and is officially described as follows:
“When Mr. Mxyzptlk (guest star Peter Gadiot), a magical imp, shows up on Earth and declares his love for Kara, she tries to let him down easy, thinking him harmless. However, he decides it’s a challenge and starts to wreak havoc on National City. Mon-El has seen beings like Mr. Mxyzptlk on Daxam and knows how dangerous they can be. He and Kara argue over how to get rid of Mr. Mxyzptlk, further straining their relationship. Meanwhile, Alex and Maggie celebrate their first Valentine’s Day together.”
Stefan Pleszczynski directed the episode, written by Jessica Queller & Sterling Gates.
Supergirl stars Melissa Benoist in the title role, Mehcad Brooks as James Olsen, Laura Benanti as Alura Zor-El, Calista Flockhart as Cat Grant, Chyler Leigh as Alexandra “Alex” Danvers, Jeremy Jordan as Winslow “Winn” Schott, Jenna Dewan Tatum as Lucy Lane (sister of Lois), David Harewood as Hank Henshaw, Peter Facinelli as Maxwell Lord, with Dean Cain and Helen Slater. Supergirl season two features recurring roles for Katie McGrath as Lena Luthor, Floriana Lima as Maggie Sawyer, and Lynda Carter as the President of the United States.