This is not actually my main Mike AU design, but it takes parts from it. The grey shirt is ripped to emulate the grey tank-top he wears as a teen, and the blue pants and brown shoes are also taken from his earlier color palettes. The trench coat is just a fun design thing that I thought looked cool. I got the idea for the robotic arm by playing gunslinger engineer in TF2, and I think it works well. I like to think that Mike lost his arm in the same encounter where Springtrap lost his, for parallels and stuff. The idea is that Mike scavenged parts from his father's old workshop and fashioned an arm out of it. It could be interpreted as him taking his father's work and using it for something good, or alternatively as a way to represent him growing more like his father (he's fusing with mechanical parts like Springtrap). Anyways, I like it. Also, the duct tape on the robot arm is meant to mirror the bandages on his regular one. The bandages on his face and the goggles were just chosen because it looked cool. The whole design was very much inspired by Hank from Madness Combat, because I wanted Mike to feel very active and athletic; the main idea was to take Michael and turn him into the protagonist of an action movie. In that regard, I think it works pretty well.