No single entity named Nightmare is confirmed as the subject of the most recent stories. The name appears across a Manga Barcelona concert bill, a Chao Zero Nightmare game guide, the Nightmare Before Christmas merchandise line, and a VTuber charity ranking. The clearest current thread is Nightmare as a band booked at Manga Barcelona, December 5 to 8, alongside ALI and other guests.
Nightmare appears in the Manga Barcelona guest roster for the convention running December 5 to 8 at Fira Barcelona Gran Via, listed among the music acts alongside Reol, Lotus Juice, ALI and Aiobahn +81. That is the only recent story that places Nightmare as a performing act rather than as part of a title.
Most other appearances of the name belong to works. Chaos Zero Nightmare, the deck-building roguelike from SUPER CREATIVE and Smilegate, got its Galaxy Disaster Season 5 update on October 21 and a first-anniversary retail fair at 100 GEO stores from October 23. The Nightmare Before Christmas had a pop up store in Akihabara through October 25 and a Maison de FLEUR line on sale September 11. A Nightmare Frontier full release, a Nightmare Circus demo, and a Little Nightmares 3 DLC all carry the word in a title, not as an act.
Two person-shaped Nightmares sit apart from the rest. Nimi Nightmare ranked 17th on Tiltify's 2025 Top 30 Fundraisers list with $361,042.03 for St. Jude Children's Research Hospital, within a VTuber total of about $1.956 million. Petra Nightmare, a VTuber, has a Village Vanguard merchandise pre-order from August 21 to September 8. Neither is tied by any story to the band on the Manga Barcelona bill.
Across the coverage, Nightmare is a name shared by a band, a VTuber and several game and film titles. The stories do not establish a connection between them, so the dossier records each separately rather than as one career.
Written with AI from the cited Yomimono stories below, each itself sourced. See our editorial policy. Every fact links the story it came from.
Structured graph also available as JSON at /public/entities/nightmare.
CC BY 4.0.
Manga Barcelona will bring Junji Ito, Hyuganatsu, Nao Iwamoto, Sakaomi Yuzaki, Yudetamago, Taizan 5, Kore Yamazaki and Shoji Kawamori to Fira Barcelona Gran Via from December 5 to 8. The guest roster also includes animator Risa Ebata, director Keiichiro Saito, producer Yuichiro Fukushi, singers Reol and Lotus Juice, bands ALI and Nightmare, DJ Aiobahn +81 and card illustrator Oswaldo Kato. Ito drew this year's poster.