Hamilton Horstachio, also known as Hamilton, is the main antagonist of the Viva Piñata episode "Horstachio of a Different Color". He was Hudson's archrival, and stole his spotlight, only to get defeated when he changed color after eating too many Black Berries.

Horstachio of a Different Color

After some time, Hamilton became the most famous Piñata of Piñata Island. Hudson loses his fame and starts to become depressed. Cinnamone Cinnamonkey tries to book more appointments for him, but Hamilton, who pretends to be Hudson, cancels all his events. Hudson's friends, Fergy Fudgehog, Paulie Pretztail, and Franklin Fizzlybear, see Hamilton take over and come up with a plan. They fend friendship with Hamilton, and throw him into serious predicaments. Then, he accidently eats Maria Moozipan's Blackberries, causing him to transform into a Zumbug. The Moozipan gets angry at Hamilton, and chases him away.

Hudson Knows It All

Hudson retells his story of how he defeated Hamilton and got his fame back to his friends.