Gekka is an assassin belonging to the Kurohabaki Clan. He is one of the two Kai-Ken trios in Ginga Densetsu Weed: Orion. His brothers are Shikkoku and Kurogane.
He is a dark-coated Kai-Ken with typical stripes across his body and face. He has dark markings over his eyes and around his muzzle. He has lighter markings around his muzzle, bottom face, chest, belly, legs and tail. His eyes have big, light irises with black around them.
Gekka is somewhat short-tempered and rough. When he knows he's overpowered by an enemy, he isn't willing to fight.