Vanessa Doofenshmirtz (2nd Dimension)

Vanessa Doofenshmirtz is the daughter of Heinz and Charlene Doofenshmirtz and 2nd Dimension counterpart of Vanessa Doofenshmirtz. She only makes a cameo appearance in the 2011 TV film, Phineas and Ferb The Movie: Across the 2nd Dimension, and later becomes the secondary antagonist in the episode sequel, Tales From the Resistance: Back to the 2nd Dimension.