Gustin doesn't seem particularly thrilled to see his fellow Warbler in the sneak peek image below — but that's probably because Criss is playing the villainous Music Meister — a metahuman ...

The 'Glee' star is reuniting with Grant Gustin and Melissa Benoist for some musical mischief on Tuesday's 'Flash.' Darren Criss is reuniting with former Glee co-stars Grant Gustin and Melissa ...

Grant Gustin felt that, ... The Flash‘s Jesse L. Martin and Carlos Valdes also sang in the episode, as did Glee grad Darren Criss, guesting as the villainous Music Meister.

DARREN CRISS (“GLEE”) GUEST STARS AS THE MUSIC MEISTER IN THE FLASH AND SUPERGIRL MUSICAL CROSSOVER – Barry (Grant Gustin) and team are surprised when Mon-El (guest star Chris Wood) and Hank ...

‘The Flash’-‘Supergirl’ Musical Crossover Adds Darren Criss as Villain “Glee” alum to reunite with former co-stars Grant Gustin and Melissa Benoist Getty Images ...

Should The Flash/Glee crossover transpire, actor Grant Gustin told Entertainment Weekly that he already has someone in mind, should the stars align. “I was just talking to Darren [Criss ...

Grant Gustin, who is making his Broadway debut this season in Water For Elephants, ... Gustin was joined on stage by Darren Criss and Will Roland to perform "Sincerely Me" from Dear Evan Hansen.

Glee alums Grant Gustin and Melissa Benoist will reunite with their former co-star Darren Criss in The Flash's upcoming musical crossover with Supergirl, and Mashable has an exclusive first look ...

Darren Criss is reuniting with former Glee co-stars Grant Gustin and Melissa Benoist for some musical mischief on Tuesday's The Flash - Supergirl musical crossover, but first, he's gotta catch them!

Grant Gustin felt that, ... The Flash‘s Jesse L. Martin and Carlos Valdes also sang in the episode, as did Glee grad Darren Criss, guesting as the villainous Music Meister.

Darren Criss is reuniting with former Glee co-stars Grant Gustin and Melissa Benoist for some musical mischief on Tuesday's The Flash - Supergirl musical crossover, but first, he's gotta catch them!