Troy Gentile is an American actor best known for his roles as Mark in Hotel for Dogs (2009) and Barry Goldberg on the comedy series The Goldbergs (2013–2023), and for playing young versions of Jack Black‘s characters in Nacho Libre and Tenacious D in The Pick of Destiny.

Hotel for Dogs is a 2009 American family comedy film directed by Thor Freudenthal in his directorial debut, and based on the 1971 novel of the same name by Lois Duncan. Starring Jake T. Austin, Emma Roberts, Kyla Pratt, Lisa Kudrow, Kevin Dillon and Don Cheadle, the film tells the story of two orphaned siblings, who secretly take in stray dogs along with their family dog at a vacant hotel.