It's been claimed that the Hollywood actor has been putting all his movie experience to good use, developing an "irresistible persona" for the show.
A show source told the Daily Star newspaper today: “Gary knows the viewers want entertainment and he gives it to them with nutty behaviour.
"It is Oscar-winning stuff. Even the deafness looks put on.”
They added: “Gary knows it is a game show and he is in to win.
“He is TV’s greatest ever conman.”
But at the same time, its also being claimed that CBB bosses have been 'fixing' it for Gary to win by focusing on his best moments and cutting those less savoury clips.
It's after Gary became a "fan favourite" with show producers.
Almost every housemate in the house has now clashed with Gary, with all those leaving claiming he's been a nightmare to live with.
From bumping into girls to peeing in the shower and repeatedly getting naked, a number of accusations have so far yet to be backed up by evidence.
But evicted CBB housemate Stephanie insisted: “What viewers see is silly, eccentric Gary but that is not really him. Everyone’s fallen for it.”
Channel 5 declined to comment on the fixing allegations.