In 'The Little Mermaid', what is the name of the mermaid?

In 'Toy Story', what is the name of the boy who owns the toys? In 'Frozen', what is the name of the snowman? In 'Frozen', who is Elsa's younger sister? In 'Beauty and the Beast', what is the name of the heroine? In 'Aladdin', what is the name of Aladdin's monkey? In 'Aladdin', what is the name of the villain? In 'Cinderella', what does Cinderella leave behind at the ball? In 'Up', what is the name of the talking dog?