Dragon Challenge (formerly known as Dueling Dragons) is a pair of intertwined inverted roller coasters in the The Wizarding World of Harry Potter area of Universal Studios' Islands of Adventure. The ride is themed to two chasing dragons, one side being Chinese Fireball and the other Hungarian Horntail. It features a layout in which the two trains share adjacent lift hills but then traverse two unique courses. The ride was designed by Bolliger & Mabillard of Switzerland. The Chinese Fireball dragon reaches a top speed of 60 mph, and the Hungarian Horntail dragon reaches a top speed of 55 mph. Both versions feature five inversions.