I don't want to offend you with the following post, but I'll tell you the way I see it.
You are not worth a nickname if you can't find one of your own.. Each of us is unique for choosing their own nickname.. If it's for you to ask other people to find a nickname for your character, you ain't gonna be something unique, but something pretty common and boring.
So best advise is to come up with a nickname of your own

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