Nightmare Freddy is an antagonist of the Five Nights at Freddy's 4 video game and is one of the seven nightmare anmatronics. He is the nightmare version of Freddy Fazbear. Nightmare Freddy is an extensively tattered and exaggerated version of Freddy Fazbear, even more so than his appearance in the second game. Like the original Freddy, he is brown in color with lighter coloring on his stomach, ears, and muzzle. His arms are bulky and held out wide in a similar fashion to the other nightmare animatronics and his black top hat and bow tie are present. The hat looks very torn with a few wires poking out. He has long nearly sharp teeth and razor-sharp claws with shining yellow eyes, giving him a more macabre appearance than his original counterpart. The teeth are red-tinted at the end, like Nightmare Fredbear's. His body shape is slightly different from Freddy as well, being much more sharp-edged and flat, with the head being much more narrow and taller than any other Freddy counterpart.
Nightmare Freddy has a much different AI mechanic than the other animatronics do in the fourth game. As the nights progress, the player must check the bed behind them to see if the Freddles are lurking there. Once the player has shined the Flashlight on the bed, the Freddles will generally disappear almost immediately in a paranormal manner. Depending on how long the player stalls to check the bed, there may be one, two, or even all three Freddles sitting on the surface. It takes noticeably longer for three Freddles to disappear than it takes one or two and the animation is different, as they zip off the side instead of just instantly fading away. However, if the player still fails to check the bed in a consistent manner, Nightmare Freddy will appear in their place and will proceed with his attack.
- Nightmare Freddy was not recolored or replaced in the Halloween Edition of Five Nights at Freddy's 4. He is one of two animatronics with this characteristic.
- Five Nights At Freddy's 4 Trailer on YouTube