Antagonist. He doesn't think about what he may do to the protagonist or other form of character. He might even be against them!
When a character walks and talk in a certain way, it reveals a lot about their character. For example, if a character were to walk very energetically and quickly with no shame, they may have confident character traits.
"Why would Mr. Yallow need to break the system?".
Please correct me if there's anything wrong!! :)
I would follow the golden rule, treat someone how you would want to be treated. It will only make you look how you want to look, you could seem very nice to people and they will feel mutual most of the time.
