Daisuke's grandfather Takeda Gohei is a hunter and very talented in training bear dogs. He has trained both Shiro and Riki, and during the beginning of the series, Gin. Five years ago he was out hunting with Gin's grandfather Shiro. They were attacked by the bear Akakabuto who ripped off Gohei's left ear. In return, Gohei shot out the bear’s right eye. Even though Gohei is a skilled hunter, he loses Shiro because of the monster bear and after a few years Riki.

Gin is a silver Tora-ge named after his coat color. Shortly after being born, he watches his father, Riki, get killed by Akakabuto, a bear that terrorizes everything in its path. Being the third-generation of bear-dogs to try to stand up against Akakabuto, he ventures out to find wild dogs to join him in his fight.

[Wiki (jp)](https://ja.wikipedia.org/wiki/渡部猛)

**Non-anime roles:**
- Inazuma Ginga - Taiyo Sentai Sun Vulcan (TV Series)
- Baku Mozoo - Dai Sentai Goggle-V (TV Series)

**Ivar Trygve Nørve** is a Norwegian actor and voice actor.

Lars Gunnar Birger Ernblad was a Swedish voice actor and translator. 

Sverre Wilberg was a Norwegian actor, perhaps best remembered as the clumsy police superintendent Hermansen, always going after Egon and the rest of Olsenbanden. Sometimes he manages to catch up with them, and sometimes he fails completely, and is often demoted by his superior to parking ticket guard, officer of the riding police, and such.

A giant demon bear named Akakabuto has taken over Futago pass. Shortly after, a silver, tiger-striped Akita pup named Gin is born and is trained as a bear-dog. Gin is brought to Riki (the leader of a large pack of dogs and Gin's father) to join the pack. Riki let's him join after proving his strenght and sends his platoons to all parts of Japan to recruit strong males to fight Akakabuto. Gin, the third generation of bear-dogs goes through many hardships for the purpose of stopping the terrifying bear, Akakabuto. 
(Source: AnimeNewsNetwork)

Riki, the grandfather of Weed and father of Gin, was born a runt. He was fathered by Shiro and mothered by Yamabuki. Shiro's owner, Gohei, pays no attention to Riki when he comes to pick a pup from the litter. Instead, Riki is never rehomed and becomes close to his mother. Unfortunately, Yamabuki's true owner, who had been sick, was healthy enough to take her back. She didn't feel she could handle two dogs, and decided that he would not take Riki in. Riki severely missed his mother, and one day set out to meet her. On his way, he is attacked by a pack of dogs. Hopelessly outnumbered, Riki tries to escape and falls into a river. Waking up, he learns that his father, Shiro, has rescued him. Riki had never seen his father, but had known his name. Shiro, on the other hand, didn't know that Riki was his son and left before Riki could say anything. But, not before giving him a speech on being strong. Riki makes it his goal and constantly tries to get stronger. 
(Source: Wikipedia)