Hubcap is the leader of the Ruff-Ruff Pack, with Dwayne and Gasket taking orders from him. Though we haven't seen much of his skill set yet, he is not as good at driving as Dwayne and Gasket, by the point Gasket told that he already had wrecked 3 motorcycles before Wild Cat's one.
Hubcap is the leader of the pack, and he wanted to go to Adventure Bay to cause some trouble. He is the bravest member of the pack, as either Gasket or Dwayne scared of the gorge, with him not believing that a gorge was there. Furthermore, he refers to Wild Cat as a kitty while Gasket and Dwayne were leaving the Ferris wheel. When Mayor Goodway told them to leave, he had no problem causing some "wheel trouble". He hates the Moto Pups, wanting to crush Moto HQ and wanting to stop them from foiling his plan.
He is rather overconfident and arrogant. He thinks his motorcycling skills are amazing even though, as Gasket points out, he has a tendency to crash motorcycles. He also tends to pass off others' ideas as his own in a vain effort to look smart.
He is a grey French Bulldog, though his face has a stripe that is a lighter shade of grey. He has one fang poking out of his lower jaw. He usually wears a grey and black helmet with spikes on the top, and a brown leather jacket with a red badge that has a white bone on it.
Here is a gallery of Hubcap's attires throughout the series.
Hubcap's pup-pack includes a gripper claw similar to Sweetie's one. He uses it to grab and cause mischievous things with it.
Hubcap shares his vehicle with Dwayne. He usually sits in the side seat due to him being very short and unable to drive very well. However sometimes he takes the first seat and drives but usually crashes much to Dwayne's dismay.