Spongebob/Lunatic Dad

Cast

 * Squidward as Lunatic Dad
 * SpongeBob as Kyle (Both are stars)
 * Sandy as The Mom

Cast 2

 * Plankton as Lunatic Dad
 * Patrick as Kyle
 * Karen as The Mom

Cast 3

 * SpongeBob as Lunatic Dad
 * Stanley S. SquarePants as Kyle
 * Cream the Rabbit (from Sonic X) as The Mom

Cast 4

 * Mr. Krabs as Lunatic Dad
 * Plankton as Kyle
 * Mama Krabs as The Mom