Kouga is the leader of the wolf demons, who rule over the mountains. Kouga is first brought into the picture when his wolves attack Rin's village. Inuyasha and his gang start killing the wolves and Kouga comes to their rescue. He has three shikon jewel shards (one in each leg and one is his right arm). He is extremely fast and retreats when Inuyasha tried to use his Wind Scar. He then plots to kidnap Kagome as she can see the shikon jewels. When the gang decides to continue on through the  mountains, Kouga steals away Kagome and, by accident, Shippo. He had just planned to use Kagome for her ability to see shards, as their tribe is being distroyed by these evil birds with one powerful one that has a shard, but finds himself falling in love with her. He promises to her he will kill Inuyasha so she will have no one else to think about. He and Inuyasha don't get along, as he is convinced Inuyasha is Kagome's lover, but Inuyasha denies it. Kouga appears a lot after his intro episodes, always after Kagome...

 

Shards of the Shikon no Tama-Kouga is unaturally strong and fast for he has three jewel shards.