Betsy Burnett, also known as the Disco Ninja, is a ninja trainer and F45 coach from Sydney, New South Wales, who firstly competed on Australian Ninja Warrior. She is notable to became the shortest competitor to compete on Australian Ninja Warrior (at 151cm/4 feet 11.5 inches)
Australian Ninja Warrior
On Australian Ninja Warrior, Betsy made all the way to the fourth obstacle (the Cargo with Laché) in her heat (Heat 3) and finished in 17th place, still good enough to qualify to the semi-finals. Then, in her semifinal (Semifinal 1), she went out on the Jump Hang).
Australian Ninja Warrior 2
On Australian Ninja Warrior 2, Betsy competed along with her boyfriend and fellow competitor, Josh O'Sullivan. In her heat (Heat 3), she was able to scale the Warped Wall and complete the qualifying heat course, becoming the second woman ever to do so and the third woman to scale the Warped Wall on Australian Ninja Warrior. In her semifinal (Semifinal 4), she made all the way to the seventh obstacle (the Salmon Ladder to Paper Clip), but her time was not fast enough to qualify to the grand final.