Cyrus Arnold (born January 2, 2003) is an American actor. He is best known for portraying Kenny Yankovitch in Mr. Harrigan's Phone, Derek Zoolander Jr. in Zoolander 2, BJ Malloy in Sam & Cat, and Josh Jagorski in the New Line Cinema/HBO Max Original 8-Bit Christmas, as well as, as a cast member in the Disney+ original Just Beyond.