Tonight's episode 13 of "Supergirl" season 2 will feature an action-packed entertainment fueled by despair and jealousy.

"Supergirl" season 2 episode 13 comes with a title of "Mr. & Mrs. Mxyzptlk," which will feature a magical imp Mr. Mxyzptlk (guest star Peter Gadiot) showing up on earth to profess his love to Kara/Supergirl (Melissa Benoist).

Based on the promo teaser of the upcoming episode, the magical creature proposes marriage to the Girl of Steel and magically dresses her in a wedding gown. However, it is said that, upon Supergirl's rejection of Mr. Mxyzptlk's offer of love, he will start wreaking havoc on National City.

Despite this, though, Supergirl will still go easy on the imp, knowing that, on the whole, they are harmless even if they are mischievous. The Girl of Steel's decision on how to handle the situation will not sit well with Mon-El (Chris Wood) as the latter has witnessed on his own planet, Daxam, how dangerous the said creatures can be.

However, in a recent interview with Wood, it has been revealed that his character's hatred toward Mr. Mxyzptlk is more than just knowing the danger he can cause. According to Wood, Mon-El does not like the fact that the imp will ruin his potential romantic moment with Supergirl and is trying to manipulate things so that she will cave in to his love proposal.

"When he ends up fighting Mr. Mxyzptlk, he definitely has all of (those feelings for Kara) fueling his blows... Every punch is filled with 'Don't touch her! She's mine!'" revealed Wood to TV Line.

While love will make things complicated and chaotic for Supergirl, Mon-El, and Mr. Mxyzptlk, the same thing cannot be said about Alex (Chyler Leigh) and Maggie (Floriana Lima) as the two will spend their first Valentine's date ever. As seen on the teaser promo, the two will even engage in a tight embrace, showing how blissful they are with their relationship.

"Supergirl" season 2 episode 13 airs over The CW tonight at 8/7 p.m. C.