I have a little feeling that Mike is going to be a bad character. It could be just weird acting, but his character just looks suspicious to me.

I thought the same thing all through the episode! I kept thinking, this guy may never show up again, but if he does he will play a dark person.

I'm glad someone else thinks the same thing! I know that he's at least going to be in one other episode. Plus Aaron offers him a job, so we have to see him again throughout the show.

I also think he is a bad guy and my opinion was confirmed when he came back in order to talk about Tracy's death. He didn't expect Aaron would be happy to get the knife. Mike thought Aaron believed his daughter is dead by giving him the knife but instead of that, Aaron knows his flash forward will be true. It's only after having seen Aaron's behavior that Mike talks about the death of Tracy, it's as if he had to convince Aaron his daughter is dead.