'Phineas and Ferb' stars Ashley Tisdale, Alyson Stoner, Vincent Martella, Caroline Rhea and David Errigo Jr. reacted to longtime fan theories for PEOPLE exclusively while speaking about the Disney Channel show's new season, premiering on June 5.
https://people.com/ashley-tisdale-alyson-stoner-and-more-phineas-and-fe…