User blog comment:Heinz84/Could Dr. Doofenshmirtz be Phineas and Candace's Biological Father?/@comment-2145190-20100722033344

So Nan, I'm not the first one to come up with this theory?

And Doof is evil. the only good act i've ever seen him take was giving mr fluffy pants back to his owner. Other than that, I think he's pretty evil.

And Daisy, how many times did Candace meet Doof? The only time i can think of is when she was bringing him his cupcakes.