Denning and Grim are the secondary antagonists in Air Buddies. They are Selkirk Tander 's minions. Grim is also Selkirk's nephew. They were portrayed by Paul Rae and Trevor Wright respectively. At the beginning, Denning wonders when he would have to ship the tiger for Bartelby. Selkirk Tander informs him that they wanted Air Bud instead. He tells Denning to take Grim with him and go out and capture Air Bud. Denning was in charge of the operation. At night, Grim and Denning discovered that while they were on surveillance, they noticed that Air Bud was a wife that was identical.