Koga (鋼牙, Kōga) is a character from the manga and anime Inuyasha. He is a wolf demon and leader of one of the wolf tribes, and therefore an Ōkami Yōkai. He has three fragments of the Shikon Pearl embedded in him, two in his legs and one in his right arm. Thanks to this, he has great speed and considerable strength. He is an ambiguous character, since he cannot be placed among the bad guys, nor among the good guys.
He has two helpers who faithfully accompany him, Hakkaku and Ginta.