Manufactured and licensed by YourBrickGuy, the Alteisen MK.VI stands approximately 78 cm tall and is based on the game Nikke. It features removable parts such as an opening head and an adjustable spiked torso.

The Old Iron MK.VI was built for the sole purpose of attacking and looting the trainloads carried in the Ark.
Although it was built by Heavenly Ascension with limited resources and outdated technology, its level of completeness was considered very high, as numerous craftsmen and skilled engineers were involved in the work.After completion, the vehicle was discovered and confiscated by the central government due to an internal whistleblower.However, the central government had no real need or requirement for the vehicle as it was built with outdated technology. It was eventually abandoned and left on the surface, where it was eventually discovered by the Raptures and eventually taken over by them, and now poses a threat to NIKKES on the surface.