The latest Supergirl episode photos show that Mr. Mxyzptlk will be returning with some info for the team.
Supergirl episode 611, "Mxy in the Middle," will also see Lena trying to learn more about her birth mother.
THOMAS LENNON RETURNS AS MR. MXYZPTLK -- Supergirl (Melissa Benoist) and team must stop Nyxly (Peta Sergeant) from vanquishing a familiar face from Supergirl's past -- Mr. Mxyzptlk (guest star Thomas Lennon). Mxy returns and explains Nyxly's dark history to the super team in the best way he knows how -- in song form. Meanwhile, Lena (Katie McGrath) visits her mother's birthplace in Newfoundland, eager to dig into her past but is shocked by the small town's icy reception towards her.
Supergirl episode 611 airs on Sept. 14, 2021.
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