The Ultra Mega Rocket was the ultra version of the Mega Mega Rocket. The name of the weapon was Ultra Mega Rocket instead of Ultra Megarocket Cannon, most likely because the full title would have been too long to fit in most of the menus it appeared in, such as the Quick Select menu or weapons menu. This weapon, along with its predecessor, packed incredibly high firepower, and could easily do some serious damage. It also had a high rate of fire, and even had 60 ammo slots for it.
- Ratchet & Clank: Going Commando (first appearance)