The Thundercats MYSTERY BOXES Are Loose! Exclusive to StylinBoxes.com Thunder. Thunder. Thunder. Thundercats - HOOOO! Call upon the Sight Beyond Sight and reveal the goodies in this Thundercats Mystery Box! Dive into the epic battles of 3rd Earth, where the heroic Lion-O takes on the evil Mumm-Ra in a timeless tale that continues to inspire fans around the world. This is a great gift for collectors, retro enthusiasts, and anyone who ever shouted “Thundercats HOOOO!” growing up. What's In The Box? Inside, you'll find a curated selection of 5–8 items that bring the action and magic of Thundercats to life. Expect fan-favorite characters from Thundera and 3rd Earth, iconic logos and more. Perfect for display or everyday use, these surprise items are curated to thrill fans and elevate any collector’s shelf!