Lawrence Fletcher

Lawrence Fletcher (Richard O'Brien) is Ferb's biological father, who married Phineas' mother, Linda, after falling in love with her at a Love Händel concert at some point before the show begins. He is obviously English, does not appear in every episode, and rarely makes an impact on the plot. A running gag is how the Dad is engrossed in some activity (such as finding a parking spot in "Candace Loses Her Head" or cleaning out the garage in "Rollercoaster") and missed the exploits of Phineas and Ferb completely.