Suggestions by @theonewithda_gun

BLACKPINK

as Many Tons of Cameos in MyCast: Persona Mayhem

BTS

as Many Tons of Cameos in MyCast: Persona Mayhem

Kazuki Horike

as Tadashi Doi in Perfect Blue

Goro Kishitani

as Tejima in Perfect Blue

Kenichi Matsuyama

as Sakuragi in Perfect Blue

Shotaro Mamiya

as Murano in Perfect Blue

Kento Kaku

as Takao Shibuya in Perfect Blue

Mone Kamishiraishi

as Rei in Perfect Blue

Sugisaki Hana

as Yukiko in Perfect Blue

Tao Okamoto

as Eri Ochiai in Perfect Blue

Yo Oizumi

as Tadokoro in Perfect Blue

Masaki Suda

as Mamoru Uchida in Perfect Blue

Kanna Hashimoto

as Mima Kirigoe in Perfect Blue

Travis Scott

as Batman in The WORST Batman Movie

Lil Wayne

as Batman in The WORST Batman Movie

Wayne Knight

as Batman in The WORST Batman Movie

Daisuke Ono

as Benjombunud in MyCast: Shiroyasha Gaiden: The Untold Story (Anime Movie)

Studio Deen

as Animation Studio in MyCast: Shiroyasha Gaiden: The Untold Story (Anime Movie)

Production I.G

as Animation Studio in MyCast: Shiroyasha Gaiden: The Untold Story (Anime Movie)

Kenji Kawai

as Composer in MyCast: Shiroyasha Gaiden: The Untold Story (Anime Movie)