Ellie Duckles plays the self-proclaimed Queen of Peregrine Island, where mysterious things keep happening. Before the A List, Duckles also had a small role in the Netflix series Safe — in which she played young Rachel — as well as the ITV show The Bay.

If the trailer is any indication, Mia is the sole dissenter against Amber and her manipulative leadership. In addition to her turn on The A List, Ambalavanar has also been in the British TV series Doctors, where she played a character named Alia Hanif.

However, what the actor likes about The A List is its diverse cast. "I watched American shows like The OC growing up, but there wasn't anyone who looked like me in it," Ambalavanar told the BBC. "If I would have seen this trailer I would have at least started watching it, as I would have seen people who looked like my friends and family — because it represents Britain in modern days and that speaks a lot."

"One of the lovely things about The A-List is that it's approachable and appropriate for people slightly younger, while still being a cool show," Dudman told the BBC. "You can access it at eight without having the dark aspects of shows like Sabrina, which is aimed at angsty older audiences."

Dudman previously played Giulio de Medici in the period drama Medici.

"OK, good talk. Enjoy your Mean Girls reboot," a frustrated Alex tells Mia in The A List trailer. Indeed, while her friend is preoccupied with Amber's behavior, Alex is more concerned with the island itself — and why it appears to be growing teeth. She also begins developing a friendship with Petal, which may flourish into something more.

As for Dwyer, she's also appeared in Doctors, Tracey Ullman's Show, and White Dragon.

"The dominant half of the Zac and Brendan double act, he's the brawn rather than the brains," the BBC describes Ward's A List character. "Despite his considerable bravado, his body (which he takes meticulous care of) may look good but his emotional intelligence still leaves something to be desired."

Ward will also appear in the upcoming Netflix series Top Boy as a character named Jamie.

Kane's character (left) and Brendan are inseparable in The A List. The actor has also has small roles in Hobbs & Shaw and Years and Years, and will appear in the upcoming Dragonheart film.

The BBC describes Mags as "a well-meaning Mother Hen who just wants everyone at the camp to get along. There's more to her than meets the eye though and over the course of the series we'll discover that beneath her cheery façade lies a dark secret."

Okoye, meanwhile, has had bit parts in Every Blank Ever, Doctor Foster: A Woman Scorned, Death in Paradise, and (what else?) Doctors, where she played a character named Grace Mensah in one episode.

Baker previously appeared in British comedy The Bromley Boys and the 2016 horror/thriller Hallows Eve.

"A childhood illness left [Harry] with lingering health (and general) anxiety issues, an encyclopedic general knowledge gained through reading whilst in quarantine and underdeveloped social skills," the BBC explains. "He's academically intelligent but he's all theory and no practice, he's never really been out in the world and so it all seems quite scary to him."

In other words, Harry is the The A List's version of Piggy. As for Nugent, he's a relative newcomer, but has had parts in River City and Millie Inbetween.

"A dreamer and an optimist; she believes in everyone and everything," the BBC explains of Petal. "Raised in the country by an unconventional but loving family she radiates positivity and light."

And it appears as though Petal and Alex may share a romance in Season 1, which will be exciting to watch play out. Sadler herself has appeared in a handful of small projects, but the A List is undoubtedly her biggest gig yet.

Luka joins Dev in vying for Mia's affections. This is Lohan's first acting role, with more assuredly to come.

See them all navigate The A List's mysterious island when the show drops Friday.