Mandy

Mandy is the older sister of Thaddeus and Thor. She is driven crazy by the antics of her brothers, much like how Candace is by 's activities. She somewhat resembles Candace by the long neck.

During her visit to her aunt Mrs. Weaver's house, a next-door neighbor of the Fletcher-Flynns, she overheard Candace describing Phineas and Ferb's antics, and it quickly escalated into a point of pride that her brothers were more obnoxious than Candace's. She acted as lookout and cheerleader for her brothers during their fort-building competition with Phineas and Ferb. In the end, after Phineas and Ferb beat her brothers in the fort building contest, she admits that Candace's brothers are more obnoxious than her own brothers. ("Thaddeus and Thor")

Appearance
Mandy is as tall as Candace and wears a light blue sleeveless shirt with blue jeans and a black belt. She also has brown, curly, shoulder-length hair.

Background Information
Candace's nickname "Candy" may have been the source of Mandy's name.