Blanca Dishon is the original founder of Flawless Girl Cosmetics. She is very interested in finding the next Flawless Girl and despairs that she might not do so. Her strict requirements are that candidates must be at least 5'10" in height (Candace was surprised by this, as she figured they were just looking for a rhyme in their jingle). She appears only to choose the new Flawless Girl by height, because it sets a standard for beauty unobtainable by the average woman, since the average American woman is only about 5'4" in height.
- Her strongest personality traits are that she only cares about fame, glory, and of course, money.
- She dated Major Monogram once when he was an exchange student in France ("Phineas and Ferb the Movie: Across the 2nd Dimension (DVD)").
- She tried to make Candace the year's Flawless Girl, despite her being 50 feet tall.
- "Attack of the 50 Foot Sister"
- "Phineas and Ferb the Movie: Across the 2nd Dimension (DVD)" (Mentioned only)
- "Mandace" (Cameo)