Suggestions by @mischief

Tessa Thompson

as Bellatrix Lestrange in The Marauders

Thomas Brodie-Sangster

as Remus Lupin in The Marauders

Ewan McGregor

as Remus Lupin in The Marauders

Kiernan Shipka

as Daphne Greengrass in Harry Potter

Madison Iseman

as Lucius Malfoy in Genderbent Marauders

Logan Shroyer

as Rita Skeeter in Genderbent Marauders

Cody Fern

as Rita Skeeter in Genderbent Marauders

Bradley James

as Rita Skeeter in Genderbent Marauders

Chris Wood

as Rita Skeeter in Genderbent Marauders

Vanessa Hudgens

as Rodolphus Lestrange in Genderbent Marauders

Cameron Boyce

as Emmeline Vance in Genderbent Marauders

Josh Heuston

as Emmeline Vance in Genderbent Marauders

Brant Daugherty

as Mary Macdonald in Genderbent Marauders

Tom Holland

as Alice Longbottom in Genderbent Marauders

Anya Taylor-Joy

as The Queen of Hearts in Alice in Wonderland

Rooney Mara

as Regulus Black in Genderbent Marauders

Lili Reinhart

as Ted Tonks in Genderbent Marauders

Izzy Bizu

as Kingsley Shacklebolt in Genderbent Marauders

Krysten Ritter

as Severus Snape in Genderbent Marauders

Daisy Ridley

as Frank Longbottom in Genderbent Marauders