Yugopotamian

Yugopotamians inhabit the planet of Yugopotamia as seen on Nickelodeon's Fairly Odd Parents. They have contacted and visited the planet Earth on a number of occasions, usually to get in touch with Timmy Turner. They best-known Yugopotamian on the series is Mark Chang, Prince and only heir of Yugopotamia.

Background
Yugopotamians behave and like things opposite to humans. They are attracted to unpleasant things like garbage, manure and sharp object but are afraid of cute things like flowers, chocolate and Gigglepies.