naruto has not fater he was created in a lab
Pein doesn't make any since to have connection to Naruto as he is from a different village. Unless one of Naruto's parents, whom we know nothing about, switched villages or had their child taken by another village then it is very hard to believe that Pein is related. If you go with the theory, based on looks and the child the 4th chose to put the beast in, that Yodaime is Naruto's father then it seems even more likely that his own son would be from another village (meaning Pein).
Naruto is the 4th's son. Jiraiya is Naruto's grandfather.
My pants are on break right now.
Why do I like Naruto?