On March 20th and 21st, The CW will air a two-night crossover between Supergirl and The Flash which will see Grant Gustin and Melissa Benoist (along with a number of other cast members) make good use of their time spent in Glee. However, like the "Invasion!" event, this crossover won't kick off until the end of Supergirl with the majority of the singing action taking place in the Scarlet Speedster's series.
"With our Flash and our Supergirl being Glee alums, how could we not have them go up against another Glee favorite like Darren Criss?" executive producer Andrew Kreisberg recently said in regards to casting Darren Criss as the villainous Music Meister. "We have been blown away by his talent over the years and we can’t wait to see what he brings to the Music Meister." He can be seen in the photos below, though sadly sans costume as it was covered up before photographers could snap him!
To see these (copyrighted) new set photos, you'll have to click on the link in the Tweet down below.
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