Suggestions by @templetyrant

Count Olaf

as Norwegian in Characters by heritage

Flora (Winx Club)

as Spanish in Characters by heritage

Skelita Calaveras

as Mexican in Characters by heritage

Alucard (Hellsing)

as Romanian in Characters by heritage

Deuce Gorgon

as Greek in Characters by heritage

Alex (Minecraft)

as Scandinavian in Characters by heritage

Batty Koda

as Australia in Characters by heritage

Nathaniel Kurtzberg

as Jewish in Characters by heritage

Christie Monteiro

as Brazilian in Characters by heritage

Bowie (Total Drama)

as Canadian in Characters by heritage

Eva (Total Drama)

as Russian in Characters by heritage

Cerise Hood

as German in Characters by heritage

Morticia Addams

as French in Characters by heritage

Meg Griffin

as Celtic in Characters by heritage

Papa Louie

as Italian in Characters by heritage

Alicia Márquez

as Latino in Characters by heritage

Maria Wong

as Chinese in Characters by heritage

Christopher Robin (Winnie the Pooh)

as British in Characters by heritage

Ami Onuki

as Japanese in Characters by heritage

Rodrick Heffley

as American in Characters by heritage