Suggestions by @magpiemontreal

Thomas Brodie-Sangster

as Ronnie Pudding in This Is Spinal Tap

Rivers Cuomo

as John "Stumpy" Pepys in This Is Spinal Tap

Sam Hyde

as Tommy Pischedda in This Is Spinal Tap

Rachel Weisz

as Jeanine Pettibone in This Is Spinal Tap

Jack Black

as Viv Savage in This Is Spinal Tap

PewDiePie

as Josh Klinghoffer in Red Hot Chili Peppers Biopic

Michelle Creber

as Angel in Tekken English Dub Fan Cast