Mackenzie Wagner

Mackenzie Wagner (portrayed by Camille Ramsey) is an American Teenage girl who is a recurring character who appears in most of the episode in the first season of the show.

When we meet her she is a senior at Hanover High School and is in a long term relationship with Dylan Maxwell, and is also one of the main suspects as to who vandalized the cars.

History
In the first episode "Hard Facts: Vandalism and Vulgarity" starts when Sam Ecklund and Peter Maldonado decide to create and film a True Crime documentary where they try to prove that Dylan Maxwell isn't responsible for the The graffiti incident. As Dylan is being interviewed about the insident, Mackenzie turns up and after being introduced by Dylan, she takes part in the interviews,

The reveal
In the second to last episode "Climax", Sam and Peter search the faculty files for complaints made againts Coach Rafferty after discovering that someone trashed his office. They find a complaint that Rafferty for "inappropriate conduct to a student". Hearing about their investigations, Rafferty tells them that the reason for these complaints was that he had a relationship with a student's mom and didn't identify her to keep it confidential, provoking the duo to search and cross-reference the identity of the woman based on Rafferty's Facebook friend list and a list Sam created detailing Hanover's hottest moms, leading them to Mackenzie Wagner's mom.

Sam and Peter are convinced that Mackenzie is the most likely culprit and that the vandalism was Dylan working with Mackenzie worked together to draw the penises on the cars. Sam and Peter then confront Mackenzie and accuses her of the drawings, causing Mackenzie to suffer an emotional breakdown and chastise Peter for accusing her; she also accuses him of making the documentary as a frustrated response to him being a "nobody".

She pleads with the duo that they can't release this accusation as it would ruin her college plans which Sam remind her that she's done the same to Dylan's college plans. Later on she texts the team again pleading with them but they reply that they don't belive her. Angered she links that to a a link to a video on her Twitch live stream which reveals Mackenzie's infidelity as an unaware Dylan appears in the video within the timeframe of the phallic incident, proving his innocence and exonerating him. When Dylan sees the video he is upset that she was cheating on him and that she'd had evidence that Dylan innocence all this time but had choosen to sit on it and allow Dylan to suffer, being suspended from school and facing legal charges.

Dylan
Mackenzie and Dylan met at a High school party and ended up spending the night drinking and talking. They got began their relationsip not long after and have been going out for a long time before the start of the series, though they have had short brake ups during that time. Many fans have pointed out that their relationship is a little one sided with Dylan seemingly caring more about the relationship than Mackenzie.

It is revealed towards the last cuple episodes of the first series that Mackenzie has been lying and has had vide evidance that proves that Dylan's innocents all this time. Instead of handing over the video and proving that Dylan was else where during the time of the vandelism, she hides the video and allows Dylan to be suspended from school and face court charges.