McElligott will play Queen Maeve, Usher will play A-Train, Crawford will play The Deep, all part of The Seven.
The Boys is based on the Garth Ennis and Darick Robertson comic book series and was given a straight-to-series order from Amazon Prime Video.
In addition to Moriarty’s Starlight, Star will play Homelander, the leader of their superhero team, The Seven.
Antony Starr (American Gothic), Dominique McElligott (The Last Tycoon), Chace Crawford (Gossip Girl), Jessie T. Usher (Survivor’s Remorse) and Nathan Mitchell (iZombie) are set to join Erin Moriarity (Jessica Jones) in the upcoming series The Boys, according to Deadline.