Why in the world would they kill one of the most famous characters in animation history?? Brian Griffin made "Family Guy" great with his witty intellect and appeared as a central character in almost every episode. Family Guy’s executive producer Steve Callaghan explained the decision to send Brian ‘on a trip to Belize’, telling E! Online: ‘This was an idea that got pitched in the writers’ room and it sort of caught fire, and we thought it could be a fun way to shake things…