Bloody Knuckles is a 2014 Canadian comedy horror film, the first feature film directed by Matt O'Mahoney. It stars Adam Boys and Kasey Ryne Mazak and received its World Premiere at the 2014 Fantasia International Film Festival.
Travis is an underground comics artist one of whose works depicts Chinatown boss Leonard Fong as a gangster responsible for a teenager's death by rat poison. Fong cuts off Travis's drawing hand, which rises from the sewer to take revenge and also beats up its former owner. A subplot involves Homo Dynamous, a gay man wearing leather bondage gear who comes to life from Travis' comic to assist him and his hand.
The film was shot in Vancouver, and was originally titled Sick Puppy. It was O'Mahoney's feature film directing debut.