He doesn't have much, until he joined the crew. He thinks he doesn't know what his feelings are, but expresses them without thought. Their are times where he shows his emotions on the ship. He even (accidently) shows his feelings towards Trish Walker. After the time skip, He shows his emotions more and becomes more intuitive in ship parts and has a big appetite. He tends to eat more, so he usually has a bag of snacks with him. and he's not shy anymore.