Habergeon was a combatant in the the War of the Sanctuaries. He was a part of the army led by Mantis who occupied the Midnight Hotel. He used his Adept Magic to defend the Hotel from the Monster Hunters.
He created a force field around the Midnight Hotel to stop any 'Pesky bullets' from the monster hunters' supposed sniper rifles.
He could create force shields out of blue energy which may be similar to Eachan Meritorious's magic.
He was described as a bearded man with a shotgun.