She faces a version of Adrien who is obsessively in love with her in a creepy, distorted way. She also loses her ability to transform when her nightmare version of Ladybug appears.
While the heroes deal with Sandboy, Tikki and Plagg sneak away to the Kwami world to celebrate Nooroo’s birthday. Sandboy | Antagonists Wiki | Fandom
Sandboy flies on a magic pillow and uses "magic sand" to bring people's greatest fears to life.
He is trapped in his room by giant bars, unable to escape his life as a famous model and superhero.
In the Miraculous: Tales of Ladybug & Cat Noir episode (Season 2, Episode 19), a young boy is akumatized into a nightmare-themed villain after watching a scary movie alone. Episode Overview