Hero: 108

Hero: 108 is a British/Taiwanese/Canadian/Chinese animated television series that was aired on Cartoon Network and the Cartoon Network international cable network, and Kabillion OnDemand channel in the United States that was created by Yang-Ming Tarng. The series was produced by MoonScoop, in association with Gamania, Hong Ying Animation, Telegael Teoranta, and Turner Entertainment Networks International Ltd. It premiered on March 1, 2010.

Peacock Castle (Season 1, Episode 8b)
Heroes visit a castle housing some peacocks using their beautiful feathers to hypnotize humans.