Numbuh 4 and Numbuh 2 (Phineas and Ferb)

Cast

 * Phineas and Ferb - Numbuh 4 and Numbuh 2 (Codename: Kids Next Door)
 * Candace - Inez (Cyberchase)
 * Perry the Platypus - Rigby (Regular Show)
 * Vanessa - Jackie (Cyberchase)
 * Dr. Doofenshmirtz - Ozzy (The Land Before Time 2)
 * Isabella - Numbuh 3 (Codename: Kids Next Door)
 * Lawrence and Linda - Stu Pickles and Didi Pickles (Rugrats)
 * Major Monogram - Mr. Baldwin (Fish Hooks)
 * Baljeet - Young Simba (The Lion King)
 * Buford - Plankton (SpongeBob SquarePants)
 * Jeremy - Matt (Cyberchase)
 * Stacy - Maragret (Regular Show)
 * Carl - Lazlo (Camp Lazlo)
 * Gretchen - Molly (Bubble Guppies)
 * Holly - Bea (Fish Hooks)
 * Adyson Sweetwater - Mabel (Gravity Falls)
 * Milly - Clamantha (Fish Hooks)
 * Ginger - Olivia (The Great Mouse Detective)
 * Katie - Audrey (The Lorax)
 * Lina's Father and Lina's Mother - Flynn and Rapunzel (Tangled)
 * Lawrence's Father and Lawrence's Mother - Dudley Puppy and Kitty Katswell (T.U.F.F. Puppy)
 * Norm - Strut (The Land Before Time 2)