Spongebob/Sesame Street

Cast

 * SpongeBob as Big Bird (Spongebob and Big Bird are both stars)
 * Patrick as Elmo (Both Friends to Spongebob and Big Bird)
 * Sandy as Prairie Dawn
 * Gary as Snuffy
 * Mindy as Abby
 * Mermaid Man as Ernie
 * Barnacle Boy as Bert
 * Pearl as Zoe
 * Mr. Krabs as Gordon
 * Squidward as Bob
 * Tom as Telly
 * Larry as Grover
 * Plankton as Oscar
 * Fred as Baby Bear
 * Fergy Fudgehog and Paulie Pretztail (from Viva Piñata) as Two-Headed Monster