Hello, a year back or so I made a Twitter account specifically for my 18+ drawings, and recently I changed its handle. I was wondering if it was possible to keep "pingpenne" for my safe drawings and use "pekorelle" for my explicit ones. Also, since I only have two explicit drawings on the site, I was wondering if I was allowed to change the character tags so that there were two versions of the character (so having, for example, both amber_(pingpenne) for safe and amber_(pekorelle) for explicit)
Sorry for the complications, I'm trying to keep a better separation between my safe and explicit brands.
Here are the links to the accounts:
https://twitter.com/pingpenne
https://twitter.com/pekorelle

You are allowed to have two artist tags if you prefer keeping SFW and NSFW artworks separated.
Though you will also need to leave a mention in the artist wiki that these two tags should remain separated, so that people would not use both of them at once or interchangeably.

As for character tags, I don't think I have seen a rule that prohibits the splitting of them between SFW and NSFW contexts, so I guess you can also have two separate tags for them as well if you'd like.

As far as actually making sure they get tagged with the intended one, is of course up to the artist or uploader? Otherwise this just leads to bad tagging.