Nightmare Foxy is an evil clone of Foxy.

In the videos Five Nights at Freddys 1, 2, and 3, we can see that Foxy is in his FN AF 1 form and helping the main characters. But in the 4th, we can see that Foxy is in his nightmare state and he doesn't act good and save the main characters.

I think that Foxy and Nightmare Foxy are separate characters and Foxy wanted to clone himself but went horribly wrong and made the clone evil.

Did anyone else think this or is it just me?