Grimgnash

Grimgnash Skullrot is a griffin featured in Grim Tales. Sylas wants a griffin feather from him, so during the quest the player tells him a bedtime story, in the hopes of taking a feather when he is asleep. If Grimgnash doesn't like the story, he inflicts 200 hitpoints. After this, he falls asleep and doesn't wake up.

If Grimnash is interacted with outside of the quest, he requests food, such as the player themselves, and then states that he is too tired to eat the player. When an object is used on Grimnash, he states he does not care for "stupid human things" and that he is hungry. He then attacks the player.

He is currently the only known griffin in RuneScape.