Professor Poofenplotz

Esmeralda Poofenplotz, more commonly known as Professor Poofenplotz, is a recurring antagonist in the Disney Channel animated series, Phineas and Ferb. She is the nemesis of Pinky (Isabella Garcia-Shapiro's pet chihuahua). She was first mentioned in "Day of the Living Gelatin", later appearing in "Isabella and the Temple of Sap" and "Bee Story".

She is voiced by recurring guest star Amanda Plummer.