2D from the Gorrilaz - Album art. I believe it was Jamie Hewlett who did most of the art. It's fascinating because they are a virtual band. So, the design of the fictional characters was all that the fans were going see. Therefore, it had to be good.
Gorillaz is the most successful virtual band ever, fronted by four wildly talented but totally disparate characters: pretty-but-vacant singer 2D, satanic bassist Murdoc Niccals, Japanese guitar prodigy Noodle and amiable man-mountain drummer Russel Hobbs. Formed in 2000, the group's eponymous debut album was released to wide acclaim and 5 million+ sales the following year.