Trey Atwood at first must seem to be an unclear memory, as Trey was played by two different actors, Bradley Stryker (during the first season) and Logan Marshall-Green (the following seasons). Later on it doesn't really matter as we here are refering to Trey not by his face but by his character and attributes. Ryan's brother, as described by Sandy Cohen in season one, gives a limited picture of Trey, in that he is over eighteen, has stolen a car, been arrested with a gun in his pants and an ounce of pot in his jacket, in addition to a couple of other priors. Looking at this your first reaction would be what a waste of life. However, in Season 2 we come to think of him as a fairly nice person until 'The Marissa' thing happens when they both were stoned and Trey, under the impression that Marissa liked him and lost control. Following that incident, Trey was only just leaving Newport, since Ryan didn't want him there that Ryan learns about the incident had finally the 'brother vs brother' showdown that was inevitable. Trey win's the fight , demonstrating that he seems to be the only one who can take Ryan down, though soon after that Trey's character is gone from the show. Logan Marshall-Green did a good job potraying the moarlly leinent Trey, during the later seasons.