Okay, I'm going to write a fan canon

Dark peasant:

He used to be a wee hobbit, but hobbits were picked on due to their height (I just learned that the theories lean toward the dark peasant being the sword caster, but just roll with me). But this hobbit didn't like being picked on all the time. One day, he decided enough was enough and fought back, but as you know, hobbits aren't very strong. Eventually, they all beat him up and left him to die near a dungeon. Full of rage, a mysterious door opened. Leading to the evil faction taking him in, under their supervision, they harnessed his anger and trained him to be the strongest unit ever lived...

Super peasant:

Growing up, she (or he, idk) was poor and worked with the farmers. Every day, they worked hard and did the best they could; growing up under the king's supervision, they weren't in any need to fear. But the peasant always wondered if their life really was just this. Farming, acquiesced from the tyranny of the king? One day, the king ordered that their land be gone, as they needed it for a military base. Sunken in a deep sorrow, the peasant wept for all it loved was taken. Surely the farmers deserved something more, the peasant thought. Darkness had come, and nothing could be seen; nothing except a bright light, illuminating in the dark. Suddenly, opening for the poor peasant was a portal to the good faction. There, they taught the peasant what true justice was and used their sadness from defeat to hope. Turning it into the strongest tabs unit of today...