Shannan Ponton is one of four personal trainers on the Australian version of The Biggest Loser. He made his first appearance during the show's second season in 2007, where he trained the blue team alongside Bob Harper. After Bob's departure during the second week of training, Shannan was left as the official trainer of the blue team, and he continued his role as the blue team's trainer during the show's third season in 2008. He has been the blue teams trainer for a total of 9 seasons as he continues in the Biggest Loser 2015 Families. He attended Muirfield High School in North Rocks, New South Wales.