I'm no lawyer, so the following is to the best of my understanding.
In Dutch copyright law there's the notion of portrait rights. This law specifies certain restrictions for the author of a photo/drawing/painting/sculpture/etc and rights for the person in the art piece.
For this to count as a portrait, it says that it doesn't necessarily need to show the face. It is enough if the person is recognizable, for instance from other body features, iconic clothing or posture.
I was wondering, with the internet being a thing, if this recognizability requirement extends to alter-egos/personas/main oc/etc. They and their likeness and character traits are a recognizable characteristic of the person behind that persona.
For example, if you have an account on a certain website (say YouTube or DeviantART) where you always represent yourself with a certain character (for avatars, emoticons, profile pictures, etc), instead your own photo. This character is uniquely used as an identifiable character by you (so not something like a character from a movie or a game). You then commission someone to make a drawing of this character for yourself. Do portrait rights apply in this case?