Do We Have This One? Needs A Better Description

The Ammunition Backpack is cool and all, but having to lug both it and your gun may be a hassle. Why not combine them both and get yourself a Backpack Cannon!

Compare Shoulder Cannon.

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Examples:

Anime and Manga

• General Catton in Samurai Pizza Cats had a double backpack cannon.

Comic Books

• In Transformers Last Stand Of The Wreckers, Ironfist's lightformer cannon is his backpack... but he has to take it off to use it.
  • The tank mode turret of Ironfist's teammate Guzzle is situated on his back when in robot mode, with the barrel extending far past his head.

Film - Live Action

• Boba and Jango Fett's Jetpacks can fire rockets.

Tabletop Games

• Shadowrun. The Ballista Multi-Role Missile Launcher, which is worn as a backpack.
• Battlelords of the 23rd Century. The Cizerack (large quadrupedal catlike aliens) have been known to wear weapon systems mounted on their backs. See a picture here.
• Likewise Battle Cattle (pic here).

Video Games

• Mario's F.L.U.D.D. in Super Mario Sunshine
• The Buster Pod from Custom Robo Arena, which was just a cannon mounted on your robo's back
• Pokemon Black and White: Genosect, a Pokemon with a mounted cannon on its back, as modified by Team Plasma.

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