BTAS - Perchance to Dream

This episode of Batman - The Animated Series is about a dream world that the Mad Hatter has created for Batman where Batman's parents are still alive and he is engaged to Selina Kyle. However, the dream world is not a real world, and Batman manages to wake up. This story shows how the Mad Hatter can control the minds of others but even his technology is inferior to the power of the human spirit.