Gerald himself was like his pitbulls; straight for the jugular and when he smelled blood he jus became incensed. What he did to julian Jackson really is testament to the G-Man's ferocity.

As for the hypnosis thing thats a big psychological weapon used over here before fights. Collins was allegedly hypnotised prior to the Eubank and Benn fights so as to make him feel no pain!!!
Haha even i was "hypnotised" before a fight last year