Expression sheet of Michael. Also, I haven't really explained his backstory or lore, so here it is:

Michael isn't exactly a stable person. He's very easy to anger, and gets over dramatic sometimes. When he was younger, he was a very lonely child and hardly anybody wanted to hang out with him, he was also more 'in control' of his actions. He was rarely outside, and the only friends he had was Toby Swing, and a tanuki named Bleu Hanes. His older brother, Fanta, had to take care of him because his father just went through a divorce, which was devastating. Knowing that he couldn't take care of Michael alone, Fanta agreed to let Michael live with him until things were more stable. Mikey didn't mind at all, especially since he knew he would be able to do almost anything at his brother's house. Even though this was good to the little boy, Michael became more and more unstable over the years.

In 6th grade, he got revenge on a high schooler who made fun of his family and stole his lunch money by blowing up their vehicles and burning down a portion of their house, which he then framed the high schooler for. Before he successfully framed them, he threatened to kill said high schooler if anybody discovered that it was actually Michael who committed the crime. Eventually, people began to suspect that it WAS Michael who did the job, and a lot of people were afraid to get near him because of this. Bleu and Toby obviously knew it was him, but they were afraid of telling anyone as well.
In the 10th grade, Michael had met Ten. Ten was alone just like Michael when he was younger, and this made him feel bad. So he talked to Ten, and they became very good friends by the end of the school year. This is also the year Michael started putting on some pounds.

Later, after graduating high school, Michael had finished working on his van, and it now had the ability to travel through time, along with an extremely intelligent AI system. This was a huge accomplishment for him, and he celebrated with Bleu, Toby, and of course, Ten. Michael and Ten still spent nearly every hour together, while the other 2, Bleu and Toby, hardly ever talked to Ten or Micheal. They had their own lives together (they became boyfriends) and would only talk to Michael every once in a while. This did upset him a tad bit every time he thought about it, but he always got over it quickly.

Now it's 3 years after graduating from high school, and Michael is just trying to live life like a normal person, and forget the past, with his best bud Ten. He still lives with Fanta, but only because he wants to. He occasionally stays over at his father's house for a couple nights just to check on him and make sure he's doing fine. He also loves helping him with any work he can.
Micheal is also almost as big as his brother around this time, mainly because of all the bandits that try and break into his brother's house when Fanta isn't home, thinking it is empty.