Suggestions by @steelsheik

Florence Pugh

as Imogen in Fourth Wing

Diana Silvers

as Violet in Fourth Wing

Adelaide Kane

as Mira in Fourth Wing

Alex Saxon

as Nicholas Davis in Legendborn

Lei Wu

as Jem Carstairs in The Infernal Devices

Alexandra Breckenridge

as Poison Ivy in Best Fan-castings!!

Giacomo Gianniotti

as Batman in Best Fan-castings!!

Tyler Hoechlin

as Superman in Best Fan-castings!!

Rachel Nichols

as Medusa in Best Fan-castings!!

Dianna Agron

as Emma Frost in Best Fan-castings!!

So Joo-yeon

as Shim Su-ae in Operation: True Love

Alyssa Sutherland

as Aldrif Odinsdottir in A-Force

Nam Yoon-su

as Kang Minu in Operation: True Love

Song Kang

as Baek Dohwa in Operation: True Love

Suzy

as Ra-im in Operation: True Love

Hwang In-yeop

as Go Eunhyeok in Operation: True Love

Hannah Dodd

as Aldrif Odinsdottir in A-Force

Louis Partridge

as Ben Barnes in Doppelgängers

Charlie Wright

as Kyo in Magical Diary

Jenna Davis

as Spencer Locke in Doppelgängers