However, Dupuy is especially proud of his newest title as he will soon be playing in the BBL with Marshall MK Lions.
"I've been winning a lot of dunk contests but I really want to get back in the professional game so to win the dunk contest for the league I am going to be playing in feels great," said the Frenchman.
"I haven't played that much in the first half of the season but I am hoping to get some more time, to have the chance to score and show that I can play too. It has been good for the past two weeks and last two games so I'll just get back to my game slowly."
DiscoveryThe 6'3" guard will be out to prove there is more to his game than just spectacular dunks, but as Lions coach Vince Macaulay concedes, it was these abilities which caught the eye initially.
"We saw Guy down at Midnight Madness last summer and obviously he is an exceptional talent," said the 2007/08 the BBL coach of the year.
"He wanted the opportunity to play professional basketball, which he hadn't had before and we decided to give him that opportunity.
"We weren't too far away from London so we put him up, gave him a trial and decided that he could be part of the team, and he has been doing well for us lately."
PotentialSo far this appears to have been a good move for all involved, with Visa issues meaning Dupuy is unable to move back home to the States and Lions gaining an exciting prospect who is adjusting well to his new surroundings.
"He is a very quick, aggressive player and at the moment we are just trying to get him into the flow of professional basketball because he has never been in that environment before. He is learning a lot and learning fast and if he sticks with it he will be absolutely fine," said Macaulay.
"It is a case of getting him involved in the rotation and helping him understand what it means to be a team player. He has shown massive improvement in that area I have to say and I think he will have a great second half of the season."
These improvements look set to continue, with Dupuy concentrating solely on his game - although he does admit to attempting the odd stunt every now and then.
"I have jumped over all types of cars, motorcycles and everything, just to see if I can do it," he said.
"But I haven't been dunking for a while. I've just been practicing and working on my game because that is what I am focussing on right now."
This attitude will surely please Macaulay, but he does not want his protege to give up the dunks altogether.
"Not at all, at the end of the day we want people coming through the door," he said.
"In the past, people in Milton Keynes arrived about five minutes before tip-off but now everybody is there 40 minutes before to watch the warm-ups."
Lions currently sit third in the BBL and with the fans warming to their newest star the future looks bright both on and off the floor. Macaulay will be hoping his side can now build on this momentum in the second half of the season and put some pressure on the league-leading Sharks to make the battle for the BBL Championship just as competitive as Sunday's Cup Final.