Julian Dennison is a film child actor from New Zealand, best known for his roles as Ricky Baker in Hunt for the Wilderpeople, the highest-grossing New Zealand film in history, and as Russell Collins a.k.a. "Firefist" in Deadpool 2.
As the title says it’s Dreamworks and Aardman’s Flushed Away, but with a fully human cast instead of animals(and minus the parts with Roddy’s owner from the opening and the ending).
