 Phineas's birth father is never present or discussed in the series, something Marsh and Povenmire have stated that they fully intend to keep that way.It is established that his mother, Linda Flynn-Fletcher married Ferb's father, Lawrence Fletcher, after dating him for a while in the 1990s.They truly fell in love at a concert of the fictitious band "Love Händel" after they were put on the kiss cam.