Casey Colt as Marshall 'Mars' Lee

An openly gay guy who is related to Principal Lee, he is sassy, annoying but loved by all due to his cheerleading personality but is out at risk when he befriends Zedd the zombie. He loves to dress up and hide among his peers as someone he's not but realizes he likes someone else who pretends to be normal and has a fraternal twin sister named Marlo.

Sarah Fisher as Amelia 'Marlo' Lee

Is a closeted lesbian girl who is related to Marshall as her fraternal twin brother and is a new cheerleader to Seabrook like Addison and Bree. She is more shy and isn't out of the closet yet and tries to fit in being a cheerleader. She can dance but not on tempo and has somehow made her way on the team. And is also related to Principal Lee.

Nico Hiraga as Ethan McKenzie

Is a bisexual semi open guy who is related to Tracey one of the cheerleaders as a twin brother who falls for the zombie Bonzo. He loves music and makes song lyrics every once in awhile when he's inspired and is Mighty The Shrimp aka the Mascot of Seabrook.

Anthony Turpel as Mace Rudolph

Is a non binary psychic artist that bonds more with Eliza as a friend, though they love to draw it tends to comes out as a weird psychic ability to predict what happens next or in the future. He has bonded with Ethan at a younger age and knew about his music abilities and later on the first to know about him being bisexual.