Santa Claus, of course. I've always thought of him as making Christmas and admired him even more than most children. I mean, he's a fat bearded man who flies around giving people presents, and he's a wonderfully mysterious and magical touch to a series that's usually very rational and realistic. Hell, a battered, abused, and largely abandoned part of me still believes in him, irrational as it is.
Or King Arthur so we can go on awesome adventures to find the Holy Grail. Hopefully it would be like Fate/Stay Night and Arthur would be female.