Goblin King (Scooby-Doo)

The Goblin King is the secondary antagonist of Scooby-Doo and the Goblin King. He is a monstrous goblin who rules the spirit world with a clawed iron fist but also has inner vulnerability. The Goblin King is the father of Fairy Princess Willow and is voiced by Tim Curry.

Scooby-Doo and the Goblin King
The Goblin King is bribed by the greedy and corrupt magician Krudsky to help him seize magical powers and take over the world, using Princess Willow as bait. When Shaggy and Scooby-Doo enter the spirit world to take his staff, the Goblin King captures them and locks them in the tower dungeon while unleashing his goblin hordes. The Goblin King makes a deal with Krudsky and gives him his powerful scepter, but Krudsky betrays him and turns him into a goose. Fortunately, Shaggy and Scooby-Doo nab the scepter and use it to bring everything back to normal. The Goblin King reprimands Willow and punishes her for her reckless and selfish behavior before admitting he's glad to have her back. He then congratulates the Mystery, Inc. gang for saving everything. The Goblin King erases their memories (except Shaggy and Scooby's) to maintain peace in both worlds and takes Krudsky prisoner for his treachery.

Trivia

 * The Goblin King has some similarities to Rattlesnake Jake in Rango because he's the most feared creature in all the land (to mention his name sends inhabitants running for their lives) and although he is forced by the main villain to carry out his evil deeds, he takes care of him in the end.