Well if you put that way, that's understandable.
And yes, I have mentioned that "America" is from Hetalia whenever I play it. No worries there.
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Tyro Arrgula:
Page fixed.
Japanese seiuus often play dozens of roles in anime & related media, so their artist pages should never have any one role they voiced in the artist page name. Don't sell them short. Their society made them work ridiculously hard to become seiuus, after all.
The role they played should be in the artist name on the song page. The character name will still appear on the artist page when that's done, as seen above.
While we're at it, it also wouldn't hurt to mention somewhere that his 'America' character is from the Hetalia series. Not everyone's an otaku like us.