Vanessa Doofus is a fictional character from the animated television series Phineas and Ferb. She is the teenage daughter of Dr. Heinz Doofenshmirtz, a comical villain. Vanessa is known for her distinctive style, often wearing a black dress and a red beanie. She has a rebellious personality and often seeks independence from her father's antics. In the series, Vanessa is portrayed as a typical teenager who enjoys spending time with her friends and has a complicated relationship with her family. Despite her father's villainous nature, she often shows a caring side, especially towards her younger brothers, Phineas and Ferb.