Merry Christmas Ben 10 : Season 3 Episode 4
TV-Y7-FV Cartoon Network 22m int(0)
Aired: December 11th, 2006 @ 10:00 AM EST on Cartoon Network
Ben, Grandpa Max, and Gwen come upon a bizarre Christmas theme park run by an evil entity who thinks Grandpa Max is Santa Claus and proceeds to trap him.