So we've already seen Barry's dad in the Flash Annual and in the zero issue and we saw his mother in the zero issue as well. Clearly though, you can see that Barry differs a lot from his Dad and leans more on his Mom with his genetics. But then we get these little clues all over the series as to the possible 'father' to Barry Allen. Darryl Frye, who took care of Barry after his family fell apart, seems to have really known Barry's mother before her death and is constantly 'talking' to her throughout the later issues. As far as I can see it, Darryl is Barry's father. But does Barry know? Obviously not if he's still trying to save his Dad from prison, but when will he find out?