Helio-5

[...] The mobile city V was raised in - Arlasgo - was originally one of many war rigs designed to carry massive amounts of foot soldiers, supplies, and weapons across the surface of the planet. After the civil war, it had been left to ruin, as Helio-5 was unlucky enough to be the planet most environmentally-impacted by the violence in the Kholo System. The rig was repurposed and named the Arlasgo, serving as a major trading city and growing to become one of the most prosperous of the nomadic cities on Helio-5.