Dylan O'Brien as Stiles Lightwood

Matthew Daddario as Alec Lightwood

Crystal Reed as Allison Argent

Kat McNamara as Clary Fairchild

Teen Wolf cast as themselves

Daniel Sharman as Isaac Lahey
Tyler Hoechlin as Derek Hale
Tyler Posey as Scott McCall
Arden Cho as Kira Yukimura
Holland Roden as Lydia Martin

Shadowhunters cast as themselves

Dominic Sherwood as Jace
Harry Shum Jr as Magnus Bane
Emeraude Tobia as Isabelle lightwood
Isaiah Mustafa as Luke
Alberto Rosendo as Simon Lewis