That is to say, a lead character that isn't white, straight, or cis.
A few Nintendo games let you create your own avatar like Splatoon, Animal Crossing, and the Miis in general but let's step back from those and talk specifically about named characters with their own story and defined character traits.
Has it happened already in some lesser known title? I've been trying to think of characters that aren't white in Nintendo games and so far the only major example I can think of is Ganondorf.
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