Suggestions by @kamjs

Maxwell Jenkins

as Franklin Richards in The Fantastic Four

Violet McGraw

as Valeria Richards in The Fantastic Four

Michael C. Hall

as Victor Von Doom in The Fantastic Four

Azim Rizk

as Johnny Storm in The Fantastic Four

Ryan Kelley

as Worst in Best & Worst Comic Book Castings

Dr. Baxter Stockman

as Shocker in Strawhat avengers/spider-warden/X-hashiras

Bebop (TMNT 2012)

as Red Guardian in Strawhat avengers/spider-warden/X-hashiras

Karai (TMNT)

as Taskmaster in Strawhat avengers/spider-warden/X-hashiras

Muzan Kibutsuji

as Loki in Strawhat avengers/spider-warden/X-hashiras

Gohan

as Shang chi in Strawhat avengers/spider-warden/X-hashiras

Eyeless Jack

as Electro in Strawhat avengers/spider-warden/X-hashiras

Hunter (Owl House)

as Chase Stein in Strawhat avengers/spider-warden/X-hashiras

Amity Blight

as Nico Minoru in Strawhat avengers/spider-warden/X-hashiras

Betilla The Fairy (Rayman)

as Madame Web in Strawhat avengers/spider-warden/X-hashiras

Star Butterfly

as Dadger in Strawhat avengers/spider-warden/X-hashiras

Marco Diaz

as Cloak in Strawhat avengers/spider-warden/X-hashiras

Satoru Gojo

as Human Torch in Strawhat avengers/spider-warden/X-hashiras

Nobara Kugisaki

as Invisible woman in Strawhat avengers/spider-warden/X-hashiras

Usopp

as Hawkeye in Strawhat avengers/spider-warden/X-hashiras

Ben 23

as Quicksilver in Strawhat avengers/spider-warden/X-hashiras