Mangletooth

Mangletooth is a level 35 quilboar and the new leader of the Razormane tribe in the Southern Barrens. Before escaping Camp Taurajo, he was a quest giver tasking Horde adventurers will killing of the other quilboar.

Before the Shattering
Mangletooth was captured by the Orcs and Tauren and was awaiting his execution. At first, Mangletooth would try to convince players to attack the enemies of his tribe, the Bristlebacks, in hopes that this will convince his own tribesman to save him. However, after he sees his clansmates — Nak, Kuz, and Lok Orcbane — for who they truly are, he starts plotting his revenge. Prior to the cataclysm if a player bring him enough Blood Shards, he will cast the blessings of Agamaggan upon them.

He started and ends all the quests in the "Betrayal from within" quest chain:

After completing, he accepted Blood Shards in exchange for buffs in the following quests:
 * Quest:Agamaggan's Agility
 * Quest:Agamaggan's Strength
 * Quest:Razorhide
 * Quest:Rising Spirit
 * Quest:Spirit of the Wind
 * Quest:Wisdom of Agamaggan

After the Shattering
During the attack on Camp Taurajo Mangletooth was able to escape his prison and now leads the Razormane Quilboar. wants him killed for Quest:Mangletooth.