Artist Request question.

This pic post #735364 has a pixiv artist. By the name of 野良 or "Nora". The artist deleted his pixiv page should I still tag the artist and make an artist page for him linking to his defunct page or should I just leave it as is?

You should still tag the artist and make the artist page. But maybe use "Noyoshi" reading to be less ambiguous.

Having a source is always better than nothing, you can leave the bad_id tag too.