'Supergirl' and 'The Flash' Getting a Musical Crossover, 'Rocky' Star Heads to 'Arrow'

Also: One character on one of The CW's many DC Comics series will be exploring their sexuality in the coming season.
Darren Michaels/CBS; Cate Cameron/The CW
'Supergirl' (left), 'The Flash'

Get ready for singing superheroes.

The CW, trotting out showrunners from its sprawling roster of DC Comics dramas on Thursday afternoon at the Television Critics Association's summer press tour, is plotting a second crossover for the coming season. On top of the upfront-announced four-show (Supergirl, The Flash, Arrow and Legends of Tomorrow) event for the fall, executive producer Greg Berlanti announced a special musical crossover for just Supergirl and The Flash.

"We have a number of people across all of the shows who can sing and will be making an appearance in that," he said, emphasizing that it would be separate from the four-series crossover and likely not unfold until midseason.

As for who would be involved, Supergirl star Melissa Benoist and The Flash's Grant Gustin are both naturally getting in on the singing, as both actors appeared on Glee during its run on Fox. Berlanti wouldn't confirm who else could be there, but noted that both John Barrowman (Arrow) and Victor Garber (Legends) have deep musical roots.

"I met Grant and Melissa on Glee together," said Supergirl's Ali Adler. "When they're not flying or punching, they're singing on set. It's amazing."

The playlist for the musical crossover will consist of largely pre-existing songs, but "we have been talking about trying to write at least one original song per episode," said Berlanti.

The news came fast and furious from the nine producers onstage at the TCA gathering, among them several casting notes. The biggest might be for Arrow. Producer Marc Guggenheim said that Rocky IV villain Dolph Lundgren will appear in Russian-set flashbacks as a villain.

To whet fans' appetites for the fall and perhaps draw a somewhat more shared audience for the four series, the team also announced that a character on one of the shows is gay. "One of the characters on one of the shows is going to explore their sexuality and coming out," said Andrew Kreisberg, an exec producer on all four shows.

A reporter pushed the group to talk more about who might be gay, but Berlanti shut down any speculation. "We don't want to be coy about it, but we want the audience to enjoy the story," he said.