Name: Rocket
Japanese name: ロケット
Sex: Male
Breed: Borzoi (Russian greyhound)

When Rocket was a puppy, he and his brothers; Missile and Jet, was abandoned by humans in the mountains close to Tokyo. They were accepted in a pack lead by the dog, Sunshiro. Later, the pack was taken over by the two Siberian huskies Hidari and Miki, who regularly beated up the Rocket and his brothers.

One day, the two huskies wounded Rocket so badly that the old leader Sunshiro interfered and got killed. Before the old leader died, he told Rocket and his brothers to live a life with a purpose.

The brothers now became runners for Hougen, as they thought of him as a strong leader. When Hougen sends them out to find Gin's son, Weed, the three brothers bump into Ben and Cross. They don't hurt them, but continue their hunt. As they snap Weed from his pack, GB and the rest attacks them.

Rocket decides to leave Hougen's army to join Weed. Missile and Jet therefore have to return empty handed and shameful to Hougen. As they return, they are accused of having committed mutiny and spying for the Ou army. Both of them are killed to set an example of what will happen to traitors in Hougen's pack.

When Rocket hears that his brothers has been killed by Hougen, he decides to stay with Weed for good to revenge his brothers death.

After the battles against Hougen and the Gelada Shougun, Rocket is send out to find Weed who's on a trip with his love, Koyuki. When he finally finds him, he has to bring the sad news of Hokkaido's leader Hakuro's death and that Weed's friend Jerome is in danger (He’s been captured by the German Shepherd, Victor in Hokkaido).

Rocket stays a part of Weed's army through-out the story and is used as a spy and messenger.