Supergirl: Love is in the Air in 'Mr. & Mrs. Mxyzptlk' Photos

Classic Superman foe Mr. Mxyzptlk makes his way to "Supergirl" next week, and it looks like Melissa Benoist's Kara Danvers will have her hands full.

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The CW has released new images from "Mr. & Mrs. Mxyzptlk" that not only show Peter Gadiot as the full-size magical imp, but also cast a light on the romance between Alex and Maggie.

DC COMICS' MR. MXYZPTLK HITS NATIONAL CITY -- When Mr. Mxyzptlk (guest star Peter Gadiot), a magical imp, shows up on Earth and declares his love for Kara (Melissa Benoist), 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 (Chris Wood) 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 (Chyler Leigh) and Maggie (Floriana Lima) celebrate their first Valentine's Day together.

The Valentine's Day-themed "Supergirl" episode airs Monday at 8 pm ET/PT. "Supergirl" stars Melissa Benoist as Supergirl, David Harewood as Martian Manhunter, Mehcad Brooks as Jimmy Olsen, Chyler Leigh as Alex Danvers, Jeremy Jordan as Winn Schott and Chris Wood as Mon-El.

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