Ryan is a character who is the brains! He's a geek/nerd but he's cool. (He is not a teenage prisoner, he is one of the smart students) He likes to read and is really good when it comes to computers, like coding and hacking. He has a big heart and cares for those around him. Throughout the series, a lot of the characters change, for example, one of the teenages is all inoccent and would never hurt a soul, then they change to a full on warrior. But Ryan is one of very few who don't change as much. 

He has no siblings or family. He's been alone a lot. That's why his head is most of the time, in a book or a computer screen.

On Earth, he ends up getting really close with a character named Morgan. He does begin to like her, so please be aware of that. Not in season 1, but much later in the series, he will get with Morgan. Please also be aware of that.