Percius is a large, sentient eagle that lives in the Dancing Peaks and works under the wing of Great Old Tallon, serving as one of his eyes into the world. His job is to patrol the pass for travelers and watch them from a distance to gauge their threat level. While he originally had no name, he was given the moniker Percius by Merja of the Cursebusters.
In 989 IaC, Percius began tailing the Cursebusters when they entered the Dancing Peaks from Unknown. His presence was noticed by Kel Stevaen and he was beckoned by Lambchop, who completed a magical ritual in order to speak with him in eagle. Percius greeted the party and provided them with some vague warnings about the pass. After witnessing the group take care of a pack of starving harpies, Percius asked them to meet with his "bruddy", Great Old Tallon, as there was something he needed help with. Percius led the group and even assisted against the forces of the Green Hand when they were attacked. Percius was named by Merja after the battle.