So I had a fun little idea. Everybody likes Avatar crossovers yea? Well, so do I. Here is my little interpretation with additional sketches of Armin. (might add more of Eren and Mikasa)

My idea was the Eren was the Avatar (naturally) but due to the unrest in the Fire Nation, he was relocated so that he would not be contaminated with these radical thoughts. He was moved to the Southern Water Tribe, where he became BFFs with Armin, a little waterbender. When that was attacked by the Fire Nation, Eren and Armin both escaped (Armin coming along because 1. He was a waterbender and they were being exterminated and 2. because Eren chucked a hissy fit)



They stopped by an Earth Kingdom village that had just been under attack and was being harassed by thieves and the like, where they were able to save Mikasa, a strong and stoic earthbender.

Together they run around trying to teach Eren the elements and avoid the Fire Nation.

I had an idea that Armin would be the first to take a life. Accidentally of course, but after watching the blood run down the icicle Armin came to the realisation that water was in almost everything, including blood.

Armin would never teach Eren this technique and would go out of his way to try and hid it from both Mikasa and Eren. Mikasa finds out that Armin killed a man and she revealed that she had to. Together they swear to try and keep Eren from killing anyone for as long as possible.