Suggestions by @125256

Jason Blum

as Director in Five Nights at Freddy's (ICU)

Kevin Michael Richardson

as Golden Freddy in Five Nights at Freddy's (ICU)

Hildur Guðnadóttir

as Composer in Five Nights at Freddy's (ICU)

Alex Hirsch

as Bonnie The Bunny in Five Nights at Freddy's (ICU)

Temmie "Tuyoki" Chang

as Director in Undertale

Toby Fox

as Producer in Undertale

Toby Fox

as Composer in Undertale

Asa Butterfield

as God of Hyperdeath in Undertale

Roman Griffin Davis

as Asriel Dreemurr in Undertale

Thurop Van Orman

as Flowey in Undertale

Olivia Chun

as Chara in Undertale

Glenn Howerton

as Grillby in Undertale

J.G. Quintel

as Napstablook in Undertale

Rob Paulsen

as Nice Cream Guy in Undertale

Justin Roiland

as Burgerpants in Undertale

Hynden Walch

as Muffet in Undertale

Niki Yang

as Temmie in Undertale

RuPaul

as Mettaton in Undertale

Jacob Tremblay

as Monster Kid in Undertale

Josh Brolin

as Asgore Dreemurr in Undertale