Living in a mysterious lair beneath the Gargamel Keep construction site, Clacker has relations with a monstrous being that dwells beneath the ruins of Shadukar.
Unable to speak, Clacker is able only to mimic the voices and sounds of those that he hears. That said, his mimicry is perfect, and has spoken in the voices of Rarkun, Riff, Durothil, as well as the Deep Speech of the monstrous being.
When you met him, he was eating rats and communicating with the eldritch creature, before taking off into The Burnt Wood.