Gul-Horses are not actually horses, but a type of bipedal lizard native to the Toran region. Although Gul-Horses can be trained as mounts, in the past these creatures were generally overlooked by the Imperial Army due to their lack of endurance. However, their great speed and strength gave them great potential and they were sometimes used for Armoured Cavalry. Their full potential would later be realized by Teo McDohl, whose armoured cavalry would play decisive roles in both the War of Succession and Toran Liberation War.
Although Teo and his armoured Gul-Horses were victorious over the Liberation Army, they stood no match against the Fire Spears. Following the Toran Liberation War, it is unknown if Gul-Horses continued to be used as mounts.