iirc lots of Japanese manga artists are also anonymous. Like the author of the recently popular Jujutsu Kaisen series [1], who appeared on TV wearing a mask of one of his characters [2]

[1]: https://en.wikipedia.org/wiki/Gege_Akutami

[2]: https://www.animenewsnetwork.com/interest/2021-01-27/gege-ak...