This ThunderCats features a vintage poster that shows the heroic characters Panthro, Snarf, Cheetara, Lion-O, Tygra, Wilykit and Jaga ready to battle the evil Mumm-Ra. The ThunderCats battled the forces of evil on their hit animated series. Whenever the ThunderCats were in danger, Lion-O would lift the Sword of Omens and say "Thunder, thunder, thunder, ThunderCats. Ho!!". When Lion-O would let out this battle cry, the Sword or Omens would release the logo seen on this t-shirt into the sky. This symbol would summon the other ThunderCats, who were unstoppable when they were united!