Salamaz was sent to Castle Terminal on behalf of Devius to forge an alliance with the Shadow Line. However, he later betrayed them and set Emperor Z's room on fire before stealing their darkness and fleeing.
Following the defeat of Clock Shadow, Salamaz absorbed his energy and used it to grow giant. In addition, Salamaz also absorbed the darkness energy from some defeated Kuros nearby and used it to transform into a giant train.
He was defeated soon after by the combined forces of ToQ Rainbow and Gigant Kyoryujin.