The Rothana experimental walker, or REW for short, represented a walker creation from Rothana Heavy Engineering during the time of the High Republic Era. This walker, the newest offering from Rothana Heavy Engineering, made its debut at the Republic Fair which was held on the planet called Valo. During the attack on the fair by Nihil marauders, a small band of people, among them Chancellor Lina Soh, Jedi Master Stellan Gios, Regasa Elarec Yovet, and other remaining individuals, found refuge on the walker to escape the war cloud composed of gas unleashed by the Nihil across the fairgrounds. Remarkably, Soh was able to pilot the walker, a feat that astonished Gios and even herself. Ultimately, the walker met its end when a Nihil death charge detonated, resulting in severe injuries for Soh and less serious injuries for several other passengers.