Forge Ferrus' Robotic Arm, is a robotic arm that Commander Forge Ferrus uses, as his new left arm. This robotic arm was created and designed by Roberto 'Berto' Martinez, in N-Tek. It is because when Forge, Max Steel, and Steel were inside of the Makino Ship, Steel was about to stay in the ship and go with Makino, but then a Giant Centipede Monster came from no where and then Forge threw both of them out of the ship and the ship was destroyed by Jefferson Smith and Katherine 'Kat' Ryan. Then he got out of the ship, and then he didn't had his left arm because the monster ate it. The arm might also have like lasers or weapons along with it. This arm first appeared in Earth Under Siege Part Two, right about when the episode was ending.