A quasi-main character from the popular YA novel series “City of Bones” has been cast in the upcoming film adaption. Irish actor, Robert Sheehan will be playing Simon Lewis in the film opposite of Lily Collins as protagonist Clary Fray and Jamie Campbell Bower as Jace Wayland.

Sheehan is most known for his role on the television series “Misfits.” The news was announced via the author, Cassandra Clare’s official Tumblr earlier today. She revealed the news after fans were able to get the hashtag #WeWantSimon to be a trending topic on the social media site Twitter.

The novel follows Clary Fray, a seemingly ordinary human girl who discovers that she can see supernatural beings that no one else can and gets drawn into the world of the Shadowhunters, humans who hunt and kill demons. Campbell-Bower is male lead and Clary’s love interest Jace Wayland, while West plays fellow Shadowhunter Isabelle. Sheehan’s Simon is Clary’s best friend who harbors a secret crush on her and plays in a band. He, too, gets drawn into the secret underground world of the Shadowhunters in New York City.

Director Harald Zwart will direct the film in Toronto this summer, aiming for an August 23, 2013 release.