The debut trailer revealed that Valorie Curry 's Firecracker would join the crossover fun and, on top of Starlight, we also caught a glimpse of The Deep ( Chace Crawford) as well as a new character played by Wicked 's Ethan Slater.

The Season 2 cast includes Jaz Sinclair as Marie Moreau, Lizze Broadway as Emma Meyer, Maddie Phillips as Cate Dunlap, London Thor as Jordan Li, Derek Luh as Jordan Li, Asa Germann as Sam Riordan, Sean Patrick Thomas as Polarity and Hamish Linklater as Dean Cipher.