Grogar is an evil demonic ram necromancer and the leader of a kingdom named Tambelon, who once ruled Ponyland with an iron fist 500 years ago before he was defeated when the ancient bell was rung. This banished him and the city to the Shadow World.
He then returned to Ponyland 500 years later, capturing all the Unicorn Ponies one by one and plans to capture everyone in Dream Valley to be banished to the Shadow World. He has a cold and antagonistic personality, always scolding Bray for his mistakes and sometimes abuses the Troggles so they can follow his orders and do what he wants. Grogar's powers come from the bells on his neck, and he has superior magic skills far beyond any Unicorn Pony that ever existed.
Grogar was defeated again by Megan after she rang the ancient bell for the second time, destroying the bell containing his power and banishing him and the whole city back to the Shadow World.
It is said he is unlikely to escape the Realm of Darkness again.
- He was voiced by Michael Bell.
- Grogar is often considered to be the second most evil G1 villain next to Tirek, although Hydia and Lavan come close as well.
- A popular fan speculation was that Grogar would be the villain in the My Little Pony: Friendship is Magic Season 5 premiere, since Tirek was rebooted as the Season 4 finale antagonist. However, this was proven false, and the real antagonist in the Season 5 premiere is Starlight Glimmer.
- Grogar's defeat takes place during a song. The next time this is done with a My Little Pony villain is in Friendship is Magic, with The Dazzlings - Adagio Dazzle, Aria Blaze and Sonata Dusk.