Then it could be any god damned character.
Sasori's original body
Jiraiya in kid form
That mother of the bitch that follows Sasuke around (yeah yeah, we already know the theory of her being Naruto's sister)
Asuma's estranged son
Rin - Kakashi's old teammate, fate unclear.
Take your pick. If you've got nothing to reference other than looks, then you've got nothing to reference. fucking sage