Wisp

Wisp is a dog-shaped, smiling, eerie demon. He served as a mentor for Barkley for a period of time, first meeting her in the Vastlands after Barkley had lost her holy symbol due to Crow and Dazzlegleam. Barkley completed some sort of training or test, and earned a replacement holy symbol. 
Wisp stalked the party from the ethereal plane for some time, keeping watch over their whereabouts and reporting to Obscura. After Barkley turned from Obscura, Wisp spied on her and fought to try and kidnap her. Wisp was destroyed by the party during their battle with River and Wraith.