Big Boss believes in Santy Claus.

[retrolinkx]

In Metal Gear Solid: Peace Walker, Big Boss, has a conversation with Huey about Norad, Big Boss brings up that they track Santa Claus every Christmas, and even goes to argue that he is real to Huey, even though Huey just laughs it off.

If it's the Santa one, here is source.

Also, a related image.







Also I did post this before, I just thought it was overlooked, that is why I added it again.