As he left his homeroom class to advance to the next classroom, Booker heard Cerebus' barking and head off in the direction of the source of it all, knowing his presence here could mean trouble. As soon as he exited the school and dashed out to the field, he looked at the massive three-headed dog. "Hades! Just what is going on here?" Booker calls as he walks up to stand about 5 feet away from him, Tris, and Cerebus.