Phineas and Ferb/Shrek

Phineas as Shrek
 * Ferb as Donkey
 * Perry as Puss in Boots
 * Isabella as Fiona
 * Dr. Doofenshmirz as Lord Farquaad
 * Norm as one of Lord Farquaad's henchmen
 * Candace as Dragon
 * Jeremy as Prince Charming