"Iron Guard... How long can you live?" Li Yelai asked.
Before becoming a Spiritual Ability User, Li Yelai believed that the Border Iron Guard were legendary figures of great power!
They were mighty, with long lives, and in the eyes of the Giant City's inhabitants, they were invincible before the exposure of Spiritual Ability Users.
At the founding of Giant City, they sheltered humanity from danger, fighting against wasteland warlords.
Only after eradicating all threats did they fade from public view, true legends they were.
In reality, the Border Iron Guards were non-spiritual soldiers who had undergone multiple biomechanical modifications.
Through these modifications, they were unable to become Spiritual Ability Users, but their bodies became stronger and were perfectly suited for the heavy Power Armor.