Mr. Jingles

“Mr. Jingles” the name given to a notoriously hard-to-kill (and unnaturally old) ogre that stalks the dungeons.  He jingles as he walks because he carries a multitude of keys to doors he’s collected from all across the underworld.  He also carries a collection of ears he has taken from victims and an enormous slab of obsidian he wields as a sword (which does damage as a two-handed sword +3, that beheads opponents on any roll of 19-20).

When doing Mr. Jingles’ stats, he definitely gets max hit points and at least a couple extra hit dice to boot.  Additionally, he should get a couple more extra abilities since he is infused with Chaos.