The Monster, Steel roller coaster in Maizières-les-Metz, France.

The Monster is an inverted steel roller coaster at Walygator Grand Est in Maizières-lès-Metz. Its white tubular track and supports form a dense layout of curves and drops, with a tall vertical loop on one side. The ride climbs a 40-metre lift hill before a 36-metre first drop into six inversions, including a zero-G roll, a cobra roll and two corkscrews.

Built by Bolliger & Mabillard, the ride opened as Orochi at Expoland in Osaka on 15 March 1996. It closed on 9 December 2007 after the derailment of another coaster at the park, and the park itself shut in 2009. The Le Douarin brothers, owners of Walygator, bought it and had it shipped to Lorraine in 120 containers; it reopened as The Monster on 9 July 2010 after delays over frost, wind and TÜV validation.

The ride's name comes from its original Japanese identity as Orochi, a mythical serpent, renamed The Monster when it moved to Lorraine. Since the 2026 season its surroundings carry a jungle-and-adventure theme designed by AAB, with a new queue and a reworked station; the first turn and lift hill are now painted green and dark brown, with the rest of the repaint planned for 2027.

The ride runs two trains, each with eight cars seating four passengers per car. The queue and entrance sit directly beneath the station, and the lift hill rises 40 metres. Secure loose items before boarding, as the layout includes six inversions.

The layout is identical to Raptor at Cedar Point in Ohio, opened in 1994, with one difference: The Monster has no mid-course brake run. Its two trains each carry eight cars of four passengers, and the ride lasts 2 minutes 28 seconds.