He is played by Khylin Rhambo.
When they arrive as freshmen at school, Mason is kept in the dark about Liam's werewolf transformation. However, Mason seemed to know something wasn't right and keeps pressing Liam for more information.
After helping Lydia Martin fight off a Berserker and Liam revealing his werewolf nature, Mason becomes enthusiastic to help Scott's Pack. Mason has indicated that he is homosexual. He is attracted to one of the male lacrosse players from a rival team in I. E. D. and dating the chimera Corey.
In Maid of Gevaudan, a pair of size 10 shoes are found in Mason's car causing Scott to surmise that he is the chimera inside La Bête du Gévaudan. He almost disappears from existence until Lydia call him back.
Mason invites people to Lydia's lake house for a party after Liam texts him where he was going. (Read More...)
While on a run with Liam, Mason and him are attacked by Garrett. (Read More...)
Mason, again, tries to get through to an obviously upset Liam. He stops pressing to know the problem and instead promises just to be there for his friend. (Read More...)
After his experiences in Season 4, Mason becomes obsessed with Berserkers ordering expensive books on the subject. Liam is forced into showing Mason his werewolf nature after Theo Raeken (in wolf form) chases them at school. (Read More...)
Mason seems to think Liam's supernatural side is very cool. (Read More...)
Mason runs into Corey at the library and realizes that he is a chimera. (Read More...)
Mason goes with Scott and Malia to search for Liam and Hayden at the Water Treatment Plant. (Read More...)
He helps Corey test his strength and is present when the chimera starts to bleed mercury. (Read More...)
Mason and Liam help clean up the library and he later encourages Liam to return to Scott assuring him that he won't be turned away. (Read More...)
Mason continues to press Liam to listen to Scott while trying not be seduced by Corey but fails at both. (Read More...)
He approaches his car to see that Scott and Liam have broken into the trunk. Mason wonders what they're doing, Scott accuses him of being The Beast but before this confrontation could go any further, Corey appears and grabs Mason and turns invisible. (Read More...)
Mason discovers unusual compass readings. He and Liam investigate and find the abandoned home of a missing couple. Mason, Liam, and Hayden investigate the smell of blood at the school and discover a dead man in the boiler room. (Read More...)
Mason explains that he can't stop thinking about the prior night, where he and Corey had their first encounter with the Ghost Riders, he's read everything there's to know about The Wild Hunt, how they come by storm, collecting souls but he doesn't know why they were in a library (Read More...)
He comes up with a plan to keep Gwen safe by bringing her to Scott's House and covering the doors with Mountain Ash. When the Ghost Riders arrive, he attempts to get her to safety by leaving out back but the Riders are there as well. (Read More...)
Mason is tasked with finding a way to stop the Ghost Riders as he appears to be the one that knows the most about them. He later comes to the realization that the reason the Riders left the party was due to Parrish. (Read More...)
Despite being camouflaged, Mason is still able to find Corey. Mason explains that there's a refraction of light around Corey's silhouette that he can always see. (Read More...)
As Mason, Liam and Hayden prepare to warn the [[Teen Wolf Pack|rest of the pack] of Garrett Douglas' true identity, a Rider appears. He wraps it's whip around Mason's neck, tugging until Mason disappears. (Read More...)
Mason and Hayden find Corey in the radio room of the train station and after Rider depart, he takes his boyfriend to the hospital. (Read More...)
- “You remember we're freshmen, right? We just got off a school bus. We're not exactly going to be hitting the clubs till 4 AM.” — Mason to Garrett in The Benefactor (Teen Wolf Episode)
- “Intense.” — Mason during a pack meeting in Dreamcatchers
- “Okay, here we go, ram the wall, going to ram it with my car. Just smash through it. Take out the power, save my friends. Here we go. Alright, just ram it and destroy my beautiful car that my parents bought on my birthday, but I'm going to save my friends. Here we go, ram the wall.” — Mason to himself in Lie Ability