The All Terrain MegaCaliber Six (AT-M6) was a mobile heavy artillery walker used by the First Order during the Second Galactic Civil War. Larger than the previous AT-AT walker, the AT-M6 featured a MegaCaliber Six mounted on its back.
- The AT-M6 was made for the film Star Wars: The Last Jedi.
- Star Wars: The Last Jedi (First appearance)
- Sense of Right Alliance: Prelude
- Sense of Right Alliance