Wow! A character that isn't Spiritclaw, I don't colour many of those lol.
This is Heakrou, a member of Stream Clan. Before he Joined Stream Clan he was part of Blood Clan, discontent with how Scourge ran it he decided that life in Blood Clan no longer appealed to him, but this choice did not come without consequence, he was tracked down and given a rather harsh beating just after his departure. Stream Clan warriors found him bloodied and weak near their border and brought him back to the camp to be nursed back to health. The gentle care of the medicine cat, Moonsliver, along with the general cooperative and cheerful attitude of the clan easily convinced Heakrou that this was where he wanted to stay.