In the Hellboy reboot, Ed Skiren was set to play Major Ben Daimo , who is Japanese American in the comics. After backlash of whitewashing, Ed Skiren exited the role. Allowing the producers to cast Korean American Daniel Day Kim.
Kim says Asians or Asian Americans should play Asian characters.
Heres the thing though: Asians are diverse, so some of them are going to have problems with X Asian ethnicity playing Y Asian ethnicity. Kim is Korean American but thinks it is fine for him to play a Japanese American. Wonder if Korean Americans would be fine with Korean American roles going to Japanese Americans.
https://www.yahoo.com/lifestyle/daniel-dae-kim-thanks-ed-201503008.html
When it comes to ficitional characters or even an artistic reintepretation of real life characters, it doesn't bother me if the ethnicity of the onscreen actor and the literary character are the same. Obvioulsy if the movie is trying to accurately tell the story of a real life event, then the phenotypes should match. For example: it would not make sense to have a White or Asian woman play Rosa Parks in movie.
I liked the previous 2 Hellboys but with Ron Perlmann not reprising his role, I am not enthusiatic about the reboot.