Santa Claus

Going in as the "big man" eh?  Bold choice!  Actually, this could be the perfect disguise.  No one would suspect, and you can have everything you want!  Santa is a good choice if you like a straight forward approach.  He uses brute strength to get what he wants, and he can afford to with so many hit points.  He lacks finesse, but sometimes that may be just what you need.
Disguise: Santa Claus
Race: Dwarf
Class: Fighter
HP: 52
AC: 19
Initiative: +2
Skills Training: Intimidate (+6), Athletics (+3)
Attack: +1 vs. AC for all attacks
Weapons: Giant Battle Axe (2d12 + 1 for every time used)
Special Abilities: Naughty or Nice - can re-roll 1 attack roll for self, ally OR enemy once per encounter