Vanessa Doofenshmirtz is a goth teenager and one of the recurring characters in The FT Squad's Adventures With Phineas and Ferb. She is the daughter of Heinz Doofenshmirtz and she gets annoyed with his evil schemes easily. She is mostly uncooperative when she is recruited into helping her father with his schemes, though she does care for her father. Vanessa holds some respect for Perry the Platypus, Heinz's nemesis, and she has a regular relationship with Candace Flynn.
- Vanessa will at some point during The FT Squad's Adventures With Phineas and Ferb, meet the FT Squad, though they will be unaware of her father's schemes and evil ways.