Female Girls/Cinderella

Spongebob Squarepants (from Spongebob Squarepants) as Cinderella

Sandy Cheeks (from Spongebob Squarepants) as Prince Charming

Mabel Pines (from Gravity Falls) as Jaq

Isabella (from Phineas and Ferb) as Gus

Lord Tirek (from My Little Pony: Friendship is Magic) as Lady Tremaine