A Tube, or Shell, is a container that is used for carrying and loading slugs or ghouls into a Blaster. Tubes are also found on Slug Racks, which carry up to twenty Slugs at one time for easy transport.
A slug is placed into the tube and then loaded into a blaster. However, sometimes when there is already a tube in the blaster then the new tube replaces the one in the blaster.
- For Slugs (Blue) - Slug shells are bluish cylinders with 2 open sides.
- For Ghouls (Red) - Ghouls shells are reddish cylinders with 2 collapsible openings.
- Torpedo Shell: these are yellowish egg shaped barrels that used for shooting slugs (and/or ghouls) while underwater, allowing them to reach velocity where otherwise the water resistance prevents the Slugs from reaching the speed needed for transformation.