Nightmare Mangle is an antagonist exclusive to Halloween Edition of Five Nights at Freddy's 4. He returns in the Ultimate Custom Night.
Nightmare Mangle, like the other Nightmare animatronics, is a more damaged version of its normal counterpart. Its head is more tattered and broken than Mangle's, with the endoskeleton being exposed at the snout and the ears being even more damaged. Its red cheeks, nose, and lipstick are still intact, and it has one yellow eye. Mangle has two sets of sharp teeth, and its body is still mostly endoskeleton parts and wires, and its second head also features sharp teeth and resembles a human skull.
Ultimate Custom Night
|The garbles produced by Nightmare Mangle when killing the player.|
|The sound produced when Nightmare Mangle is jumpscaring the player, this is shared with the rest of the FNaF 4 characters.|
- Nightmare Mangle is one of the few non-canon animatronics to added to the Ultimate Custom Night, others being Nightmarionne, Jack O' Chica, Dee-Dee, and Old Man Consequences.
- Nightmare Mangle was programmed together with Nightmare Bonnie and Circus Baby at 88%.
- Nightmare Mangle seems to reuse elements of Nightmare Foxy's model, but recolored and slightly modified.
|Main Animatronics||Minigame Freddy • Helpy • Scrap Baby • Molten Freddy • William Afton|
|Mediocre Melodies||Nedd Bear • Mr. Hippo • Pigpatch • Happy Frog • Orville Elephant|
|Rockstars Assemble||Rockstar Freddy • Rockstar Bonnie • Rockstar Chica • Rockstar Foxy • Lefty|
|Posh Pizzeria||Funtime Chica • Music Man • El Chip|
|Others||Security Puppet • Candy Cadet • Cassette Man • Tutorial Unit • Michael Afton • Trash and the Gang|
|Custom Night||FNaF 1: Freddy Fazbear • Bonnie • Chica and Mr. Cupcake • Foxy • Phone Guy|