Acorn is a Shifter druid of the Vaanka Ghaash'kala. He was a member of the Ashbound who made his way into The Labyrinth in pursuit of a fiend fleeing from the Eldeen Reaches. When the Vaanka challenged him, he decided to stay among them.
He hoped to repair the gulf between the Ashbound and the Ghaash’kala but wasn't sure how, until they spoke to Bhaltair. Now, after Bhaltair and Valaari's help, they are the official ambassador between the Ashbound and the Vaanka.