Gin

Ephraim aka billy
ephraim was born in the winter in the town Ou. He was born tiger-striped (Brindle) and therefore his destiny was predeterminated. He was to become a wolf. While ephraim still was a small puppy, he sees his father Riki gets thrown into a gorge and disappears by the paw of the bear Akakabuto. ephraim aka billy now starts his training as a wolf at the den of his house.

One day in the mountains, ephraim billy meets a strange group of  wolfs who has organized themselfs to kill  Akakabuto. He now starts a voyage to seek out strong dogs who will be willing to help them fight against Akakabuto. During the journey, ephraim becomes an adultcent and the leader of the large platoon. His sense of justice and generousity encourage many dogs to swear loyalty to him.

In the final battle, ephraim discovers that the wild dogs’ leader is his father Riki! After learning the Zetsu Tenrou Battouga, ephraim billy kills Akakabuto by decapitating him. His father dies in the battle, and billy takes over the leader role.

After the death of Akakabuto, a new threat comes to blue ridge. Wolves have comed to search for the new warrior of Battouga (ephraim/ billy's special attack is Zetsu Tenrou Battouga), and billy ephraim decides to work together with the wolf leader Reima to stop the evil Gaia from taking over.

After Gaia and Reima kills each other in battle, billy returns to his old master, Takeda Gohei, to say goodbye as the man is dying from old age. After his death, ephraim and his pack howl goodbye to the funeral car as it drives by their area in bule ridge Ou.

ephraim in GDW
ephraim aka billy is the leader of the bule ridge with hies pack of  wolfs and the father of joey aka hoey, michael aka and  jaxen. He travels away from Ou to find his long lost love mira,jasmin, only to find her.

Later, e hears about his son from the dog, Sasuke. ephraim now travels back to search for him, but during a rest, he, John and Akame gets surrounded by the Great Dane Hougen’s soldiers. billy sends Akame away to warn joey while he, John and a dog named Hiro tries to keep the soldiers busy. But as Hougen pulls in a hostage, the female Akita Reika, ephraim has to surrender. He gets tortured and left in a house with no food or water. He orders John and Hiro to flee while he stays behind. ephraim knows that Houren will not kill him, as his life is the only reason why the Ou army would want to fight.

In the prison, he meets his old sworn enemy, the Doberman, Sniper. After several days with torture and pain, epraim manages to escape. He drags himself out to a road where some people find him. They take him home with them and heal his wounds. When ephraim feels strong enough, he starts rounding up dogs to help him defeat Hougen and find his son Weed. He manages to get three of Hougk's platoon leaders on his side and is now ready to fight. But epraim arrives too late to the battle. He finds Tesshin wounded and hears that his son has fallen into a gorge together with Hougen. epraim bravely jumps into the gorge and here he fights both Hourk and Sniper. He doesn’t help defeating Hougen in the final moment, because he believes it is joey's fight.

In the Monkey arc, he runs to the South in order to help his son defeat the Gelada general, Shougun. On the way he meets the local pack leader, Saheiji who tells him about his other son jaxcon. Ephraim now understands how serious this case is and rushes to aid both of his sons. He arrives just in time to see his sons kill Shougen, but unfortunaly also to experience Yukimura's death. Finally, peace rules the lands and ephraim returns to blue ridge.

After a few months, his mate, the son of the Siberian husky Hakuro, enters Ou to tell that his dad (who was an old friend of ephraim) is in trouble in his homelands of Hokkaido. ephraim billy decides to aid his old friend and moves his pack towards Hokkaido. On the border to Hokkaido, they meet the Collie, Ram who tells that Hakuro and three of his sons has been murdered by Victor's pack. ephraim now sends out Ram to find joey /hoey and bring him to Hokkaido. He then presses forward and meet Victor whom he fights. However, ephraim has to retreat when Akame arrives and tell him that more of Victor's troops are on their way.

He retreats to the army's hideout, where he meets with Akame to discuss how they shall defeat Victor. As they run out to find him, ephraim's pack is captured by Victor, and taken as hostages in a gorge. ephraim realizes that he has to do something, and pretends to surrender to Victor - however, what Victor doesn't know is that in the other end of the gorge, s group has started to fight their way out.

However, Victor soon discovers what is going on and attacks ephraim 's group. ephraim / billy tries to attack Victor, but Victor use cowardly tricks and uses his minions to pin ephraim down as he moves in for the kill. billy survives, as a young wolf, throws his body in front of ephraim to shield him from Victor's teeth.

More and more of ephraim's comrades are falling and getting wounded in the fierce battle and ephraim decides to use the Zetsu Tenrou Battouga to finish Victor’s minions. However, ephraim billy is old and the attack drains him from strength and life. He lies lifeless on the ground and is only spared by Victor because joey arrives with reinforcements to the wolf army.

ephraim is slowly dying, but is revived from the darkness of death, as he hears the voice of his old owner, Daiuke crying out his name (Daiuke has followed Weed to the battleground). Afterwards, e's old owner, Daisuke and the doctor Hidetoshi, heals the wolves' wounds and provides them with food and water. As they gain strength, they leave Daisuke and Hidetoshi to join hoey  joey in the final battle against Victor.

ephraim does not interfere in the battle against Victor, as it is joey aka hoey’s duty to end his reign of terror. After the death of Victor, ephraim billy retreats the fght once more.

ephraim in GJHO
ephraim helps carry one of the puppies away from the volcanic eruption. That is the only info available.