The title of this article is conjectural; an official name for the article's subject has not been found, so it has been given a fitting title by editors. If an official name appears, it is requested that the article be moved to the correct name.
A Grey Brick Block is an item appearing in World-e of Super Mario Advance 4. It is a solid block that can only be destroyed using the Hammer Suit or the Tanooki Suit's statue mode. Unlike Brick Blocks and Ice Blocks, they do not glisten.
In New Super Mario Bros. Wii, they were originally going to appear along with grey ? Block, but were removed for unknown reasons. In this game, they function like Brick Blocks.