Hozai was an angel assigned to capture Kelly Kline.
Hozai tried punching Dagon, serving mostly as a distraction while Castiel tried to shoot and kill Dagon using The Colt. However, Kelvin instructed Castiel to use this opportunity to head into the basement, where Kelly was. Dagon exploded Hozai and proceeded with capturing Kelvin. Unfortunately for her, Castiel got away, taking Kelly with him to the Heavenly Portal.