Birthday: February 25 (Piscis)
Height: 170 cm
Weight: 300 kg
Sadaharu has the outward appearance of a giant dog, but is actually an inugami. When sitting on his haunches, he is taller than most humans. He was left in front of Gintoki's apartment in a box that had "To Mr. Freelancer" written on it. Sadaharu chomps on anything smaller than itself, such as Gintoki's and other people's heads. Kagura seems to be the only one who can control him, for she has immense strength, though he chomps on her occasionally. Though he was dangerous when Gintoki first received him, he has become quite tame in the later episodes, and has helped the main characters in many occasions. He was named by Kagura, after her first pet, a rabbit which she accidentally killed while having a nightmare. He was originally owned by a pair of miko sisters, who initially called him Kamiko.
Recently, Sadaharu has impressed a yakuza's boss and receives permission to date his dog (whom Sadaharu himself has fallen in love for).
Related anime:Gintama: Nanigoto mo Saisho ga Kanjin'nanode Tashou Senobi suru Kurai ga Choudo yoi Other, 2005
Gintama TV, 2006
Gintama: The Movie Movie, 2010
Gintama (Episodes 202-252) TV, 2011
Yorinuki Gintama-san on Theater 2D Movie, 2012
Gintama (Episodes 253-265) TV, 2012
Gekijouban Gintama Kanketsuhen: Yorozuya yo Eien Nare Movie, 2013
Gintama (Episodes 266-316) TV, 2015
Related manga:Dandelion Manga, 2002
Gin Tama Manga, 2003
3 nen Z Kumi Ginpachi-sensei Manga, 2006