The AT-AT Imperial Walker Colossal Pack, colloquially known as the AT-AT, is a unique standalone Star Wars Miniature released by Wizards of the Coast. It was officially released on November 11, 2005, as a Limited Edition figure, and is currently no longer in production.
After the lower-than-expected sales of the Ultimate Missions rules supplements and scenario books for Star Wars Miniatures, Wizards of the Coast changed to a style that featured unique Miniatures to go along with famous scenes from the movies. Much like the books, the AT-AT set contains a special rules and scenarios booklet, as well as a double-sided map, depicting Hoth.
There is also included the AT-AT "colossal" miniature, which is substantially larger than any other figure produced in the series. The sizes for figures are: Small, Medium, Large, Huge, and now Colossal. Wizards has announced that they will release future Colossal figures.