The 7D's grandfathers are the founding fathers of Jollywood, as revealed in "The Jollywood Jam". Having first appeared in "Grampa Grumpy and the Ogre", they once defeated an evil ruler of the kingdom that was Grim's great-great-great grandfather. As a result, Jollywood honors these heroes with the annual Heroes' Day. Today, the grandfathers of The 7D reside at their retirement home on a cliff by the sea and their grandsons continue their legacy of protecting Jollywood.
Appearances and personalities
The grandfathers of The 7D are very similar in appearance to their grandsons. They also appear to share many of their personality traits.