Forum member krazycp has noticed something very interesting. If you look very closely at the chest symbol for some of the 4″ Deluxe Grune figures, you can see the Thundercats logo has been painted over with the Mumm-Ra symbol. He supplied a photo, where you can clearly see the outline of the Thundercats symbol. I have taken the image and highlighted where you can see the symbol.
Click the headline of the story to see my highlighted version as well as the original image.