Walt Disney/Back to the Future

Wart/Arthur (from The Sword in the Stone) as Marty McFly

Merlin (from The Sword in the Stone) as Dr. Emmet Brown

Eric (from The Little Mermaid) as George McFly

Ariel (from The Little Mermaid) as Lorraine Baines

Percival C. Mcleach (from The Rescuers Down Under) as Biff Tannen