As Riku tries to wake Sora from his deep sleep, the Anti Black Coat appears. Riku accuses it of causing Sora's nightmare, and they engage in battle. Riku emerges victorious and the Anti Black Coat vanishes.
As its name implies, the Anti Black Coat wears a garment of the same name. Its hood is up, showing none of its face save for its disk-shaped red eyes, signature of a Nightmare Dream Eater. The Coat has magenta flame designs printed on the sleeves and around the bottom coattails. Prior to its fight with Riku, the Nightmare emblem appears on its back, mirroring the Spirit emblem on the back of Riku's outfit.
The Anti Black Coat's attacks are very powerful and will often reduce Riku to 1 HP. Riku should focus on dodging the attacks, especially by using Doubleflight. It frequently breaks out of combos, so Riku should instead use quick, powerful commands, or commands that can home in on the Anti Black Coat or otherwise be used at long range.