The ERIS ARMS MK-V is a machine used by Deathstalker the Scorpion. It is a mechanical set of four spider legs that can store itself in the form of a backpack. Named after his deceased partner, Eris the Spider, Deathstalker originally came up with the idea after his first encounter with Eris. He noticed how easily she was able to manuever across a battlefield with her spider limbs, which gave her the upper hand. Prior to their next encounter, he had a prototype made up in order to even out the playing field. With each upgrade, the ERIS ARMS continued improving and became a crucial piece in Deathstalker's equipment arsenal.