Suggestions by @bestcastsyeah

John Cena

as Macau in Hetalia (Live action)

Ludwig van Beethoven

as Composer in Dandadan / ダンダダン

Oscar Isaac

as Lochness Monster alien in Dandadan / ダンダダン

Kevin Hart

as Earthbound spirit Crab in Dandadan / ダンダダン

Jacob Batalon

as Mr. Mantis Shrimp in Dandadan / ダンダダン

Jung Kook

as Serpo in Dandadan / ダンダダン

James Corden

as Turbo Granny cat form in Dandadan / ダンダダン

Michael Cera

as Ken Takakura in Dandadan / ダンダダン

Dan Lin

as Producer in Dandadan / ダンダダン

Otonoke (Creepy Nuts)

as Composer in Dandadan / ダンダダン

Zendaya

as Acrobatic Silky in Dandadan / ダンダダン

Elizabeth Olsen

as Aira Acrobatic silky From in Dandadan / ダンダダン

Mr. Beast

as Jiji Enjoji in Dandadan / ダンダダン

MrBeast

as Jiji Enjoji in Dandadan / ダンダダン

Queen Elizabeth the Queen Mother

as Turbo Granny in Dandadan / ダンダダン

Michael Jackson

as Okarun Turbo Granny form in Dandadan / ダンダダン

Awkwafina

as Aira Shiratori in Dandadan / ダンダダン

Dwayne Johnson

as Seiko Ayase in Dandadan / ダンダダン

JENNIE

as Momo Ayase in Dandadan / ダンダダン

Tom Holland

as Ken Takakura in Dandadan / ダンダダン