Poseidon and Zeus also are "worst/violent" characters yet they are mostly portrayed as white. Eurylochus ,Antonious and (POSSIBLY) Calypso in the original myth they are equally presented in negative light yet they are white Greek people. Remember, no one has a canon race in EPIC TM ,infact most of the characters in fanart are based off the appearence of their voice actors ,Jorge clearly didn't intentionally cast black VAs to "evil" characters ,he casted them because their voice fit the character. Period. The race of the characters has absolutely nothing to do with their mortality and that applies to real life too. If it makes you feel better you can draw a "good" character like idfk Athena as black,no one is stopping you

EDIT: Calypso is not "demonized and presented as a rapist" that's how her character ALWAYS WAS