Suggestions by @lorog

Joaquin Phoenix

as Bat King in MyCast: Heroes of The Community

Maude Apatow

as Charmcaster in Alien Evolution

Keanu Reeves

as Dark Sonic in Alien Evolution

John C. Reilly

as Patrick in Alien Evolution

Jim Parsons

as Robert in Alien Evolution

Sophie Turner

as Frightwig in Alien Evolution

Sadie Sink

as Kimberly Possible in Alien Evolution

Nick Robinson

as Kevin Levin in Alien Evolution

Natalia Dyer

as Gwen Tennyson in Alien Evolution

Daniel Kaluuya

as Hobbes in Alien Evolution

Colman Domingo

as Odie in Alien Evolution

Andy Serkis

as Mojo in Alien Evolution

Ciarán Hinds

as Vilgax in Alien Evolution

Timothée Chalamet

as Ben Tennyson in Alien Evolution

Alex Hirsch

as Cipher in Next Divide

Spoiler

as Cipher in Next Divide

Robert Pattinson

as Everyone Else in Next Divide

Doug Jones

as Everyone Else in Next Divide

Ethan Hawke

as Everyone Else in Next Divide

Jeff Bridges

as Everyone Else in Next Divide