With the addition of Dylan Sprayberry (Liam) from this episode, there are now two Dylans (him and O'Brien who plays Stiles) in the cast, along with two Tylers (Hoechlin who plays Derek and Posey who plays Scott) and two Ians (Bohen who plays Peter and Nelson who plays young Derek).
Tyler Posey guest starred in one episode of Smallville (2001) (Ryan Kelley also played a role in this series); Dylan Sprayberry appears as a young Clark Kent on Man of Steel (2013); and Tyler Hoechlin appears as Clark Kent/Superman on Supergirl (2015).