Ryan Higa is in this film, and announced it on his YouTube channel Nigahiga
Ryan Higa who plays Scratch, is a famous Youtuber with over 21 million subscribers.
There are a few references to Stephen King in this movie. Like the Shining, they are snowed in inside a desolate location. Also Dr. Jerrems office is Room 237, another reference to the Shining.
Nathan Kress has previously worked with Lucas Cruikshank, an American actor and YouTube personality who created the character Fred Figglehorn, on the popular Nickelodeon show iCarly. Lucas is a popular YouTuber... Just like Ryan Higa.