|"Is this all real? Or has this been happening inside my head?"
The subject of this article is a real-life person, group, company, product, or creative work that has been mentioned "in-universe" in a canon source. The Harry Potter Wiki is written from the perspective that all information presented in canon is true (e.g., Hogwarts really exists), and, as such, details contained in this article may differ from real world facts.
Gorillaz was a British musical group, famous for its use of a virutal colllection of cartoon characters accompanying the real performers. J. K. Rowling was presumably a fan of the group, as she kept a ticket for one of their concerts pinned to her noticeboard.
- J.K. Rowling's Official Site (Mentioned only)