It just wouldn’t be Mister Mxyzptlk without a trick up his sleeve, and the impish 5th-dimensional trickster couldn’t even wait for his own Supergirl episode to debut. The classic Superman villain put in a first appearance with “Luthors,” and now gets his own trailer with a first look at “Mr. & Mrs. Mxyzptlk.”

As we learned from Monday’s closing moments, Once Upon a Time star Peter Gadiot’s Mister Mxyzptlk had a very good reason for interrupting Kara and Mon-El’s first (official) kiss; declaring his own love for Supergirl. The first trailer for next week’s episode features the traditional Superman character causing all manner of magical hi-jinks, even borrowing a costume the Supergirl offices had laying around.

In the meantime, so reads the synopsis for “Mr. & Mrs. Mxyzptlk”:

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.

Worth noting, Gadiot was said to have a two-part stint as the character, leaving it unclear if Mxyzptlk will return later in the season, or perhaps the episode immediately after next week. In any case, catch the trailer above, and stay tuned for more Supergirl.