Weed (ウィード Wiido) is a brave dog and a strong fighter, just like his father, Gin. Weed believes that enemies can change their ways and almost always gives them a second chance, which is why he surpassed Gin, whom he gave his leadership to. He gets along well with others and makes many new friends during his adventures. He is usually very friendly and playful, though he can be very serious if he needs to be, especially during battles. Weed is often refered to a 'bear hound' because Gin and Riki of Ohu were before they fought Akakabuto. Weed has half the blood of a bear hound and was never trained in the way Gin, Riki and Shiro were.
Weed is a Kishu/Akita mix with tora-ge markings and blue eyes. In the manga, his eyes look more silver than blue. On his father's side, everyone had brown eyes (to begin with, before switch to green and then blue), and his mother, Sakura, has always had blue eyes. And as she's a Kishu mix, the other mix can be a breed with natural blue eyes.