Ron was a police dog who joined the Ohu army thanks to Jerome, who Ron greatly respects.

Ron was a police dog and was working on finding Kamakiri's pack when he meets Rocket.He caught Jerome later one and the two fight, with Ron thinking that the other dog was the leader of the pack he was searching for but Ron loses because he isn't very experienced fighter. However, Ron managed to bite off Jerome's ear.
Ron leaves after being lectured by Jerome and cannot forget about his words. He is then asked to go help Weed. Ron rescues Weed's pack (and Kamakiri's one at the same time) by warning them about hunters and standing on the way to protect them. He also rescues Teru who got lost during the fight. Then, Ron joins Weed's pack to fight for justice. He is later seen being one of the dogs who want to follow Jerome after Weed is about to banish the Shepherd, believing that they can work for same goal despite walking different paths.
He also explains the Ouu dogs about the explosions when the humans are about to blow up Gajou.

in GDW:O, Ron is shown among them fleeing from the fire when Kurohabaki Jinemon tells Daisuke and Hidetoshi about what happened to the Ohu soldiers.