Grogar is a villainous ram who first appeared in the four-part My Little Pony episode "The Return of Tambelon". In this series, he is the ruler of the city of Tambelon, and had tried to conquer Ponyland five centuries prior, only to be thwarted and banished to a realm of darkness. With the aid of his slave labour, he created a magical bell that would act as the primary source of his power as well as allow Tambelon to leave the dark realm. Upon his return, he sought to increase his slave labour and to exact revenge on the Ponies that banished him
In My Little Pony: Friendship is Magic, Grogar is an ancient and powerful tyrant who took Equestria as his empire back when it was a mere collection of farms and pastures. He garnered a reputation as the "Father of Monsters" for giving life to Equestria's foulest creatures and allowing them to terrorize the pony populace. Eventually, the hero Gusty the Great managed to take his magic bell and banished him from Equestria in his weakened state. A millennia later, Grogar seemingly resurfaced and recruited Equestria'sgreatestrecentthreats in another bid to conquer Equestria. However, this Grogar turned out to be a disguised Discord, who had gathered the villains as a final test for Twilight Sparkle to cement her worthiness of succeeding Equestria's highestmonarchs.