|List of all weapons & other items|
Thundrainium Cages are human sized upright cages that are made from the element Thundrainium. Belonging to the intergalactic bounty hunter Safari Joe and built by his robotic sidekick Mule, the cages were constructed specially to hold ThunderCats who are weakened by Thundrainium.
Each of the cage also has its inmate's name on the top. Joe succeeds in encaging WilyKit, WilyKat, Tygra, Cheetara, and Panthro. It is only Lion-O whom he fails to capture and who manages to defeat Safari Joe, with a little help from Snarf.