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Nothing?
I will consume not only your flesh, but your very soul.
To be honest, I've never seen that happen. Do you have an example?
There's an YKTTW there somewhere.
Example? Wild Cards series, every major character originates in roleplaying sessions that the authors engaged in before the novels even started. That's if you count roleplaying session as a work.
If not - many furry comics apply. Also shitloads of fanfiction where an author's OC travels from fanfic to fanfic.
Edited by Aminatep I will consume not only your flesh, but your very soul.
The author writes a story that has a character. Then this author writes another, usually a much more refined and acknowledged story, that usually isn't even set in this universe, but also has this character* . Certainly not Canon Immigrant / Canon Foreigner.
Edited by Aminatep