The New Mutants (MEU)

Mentors

 * Mike Vogel as Professor Samuel Guthrie
 * Julia Jones as Professor Danielle Moonstar
 * Tamlyn Tomita as Headmistress Xi'an Coy Manh/Karma
 * Sarah Paulson as Dr. Moira MacTaggert 

Students

 * Nick Robinson as Cypher Ramsey
 * Jordan Fisher as Evan Daniels
 * Nicola Peltz as Illyana Rasputina
 * Millie Bobby Brown as Rahne Sinclair
 * Andrew Matarazzo as Roberto da Costa

Recurring Characters

 * Jessica Sula as Monet St. Croix
 * Froy Gutierrez as Artie Maddicks
 * Brianne Tju as Jubilation Lee
 * Brandon Flynn as Rusty Collins
 * Finn Wolfhard as Jamie Maddox
 * Saïd Taghmaoui as Belasco/Amahl Farouk/The Shadow King
 * Quinton Boisclair as Belasco/Amahl Farouk/The Shadow King (another form)

Guest

 * Kehlani as Alison Blaire - photokinetic mutant who owns the mutant club Dazzler.

Plot
At the Xavier's Institute for Gifted Youngsters (in northern California), four young mutants ban together to fight a malevolent psychic entity, that has been possessing both the faculty and students at Xavier's Institute. The entity seems to have some sort of dark history with one of the new students: Illyana Rasputina.

 Episodes

Theme
 * The Boogeyman:
 * Ladies Night:
 * Goosebumps:
 * More Bad Than Good:
 * Phobia:
 * Hell Hath No Fury...:
 * Dreamwalking:
 * Russian Roulette:
 * Anchors:
 * The Host:

The themes of the first season of Marvel's New Mutants are:
 * Science Fiction
 * Psychological Thriller
 * Psychological Horror
 * Teen Drama
 * Romance
 * Superhero Fiction

Hellions

 * Eiza Gonzalez as Selene Gallio/The Black Queen - life-absorber.
 * Blair Redford as John Proudstar/Thunderbird - enhanced physiology.
 * Bella Thorne as Jennifer Stravos - telekinetic.
 * Katherine Langford as Marie-Ange Colbert - illusionist.
 * Brandon Larracuente as Manuel de la Rocha - empathic.
 * Justin Prentice as Buford Wilson - superstrong and durable.
 * Giorgia Whigham as Sharon Smith - feline physiology.