Suggestions by @sonictiger

Tom Holland

as Henry Frankenstein in A Day of Judgement

Millie Bobby Brown

as Alice O'Connell in A Day of Judgement

Christoph Waltz

as Abraham Van Helsing in A Day of Judgement

Danny Elfman

as Composer in A World of Monsters

Leigh Janiak

as Producer in A World of Monsters

Sam Raimi

as Director in A World of Monsters

Mr. Blue Sky

as Writer in A World of Monsters

sonictiger

as Writer in A World of Monsters

Robert Englund

as The Ripper in A World of Monsters

Michael Douglas

as Alexander O'Connell in A World of Monsters

Asher Angel

as Jake Lindell in A World of Monsters

Gugu Mbatha-Raw

as Kay Lawrence in A World of Monsters

Zendaya

as Maria Walton in A World of Monsters

Justin H. Min

as Arthur Kemp in A World of Monsters

Noomi Rapace

as Maleva in A World of Monsters

Nicholas Hoult

as Dr. Henry Jekyll/Mr. Edward Hyde in A World of Monsters

Zhang Ziyi

as Celine Dracula in A World of Monsters

Doug Jones

as Ricou in A World of Monsters

Oscar Isaac

as The Wolf-Man in A World of Monsters

Jodie Comer

as The Invisible Woman in A World of Monsters