Uka Uka (Earth-6515)

"From deep inside my temple prison, I sent you simple instructions to follow, but you lost the Crystals; you lost the Emeralds AND I HAVE LOST MY PATIENCE!!!"

- Uka Uka

Uka Uka is the secondary antagonist in the Sonic Hedgehog series who resides within a tiki mask and acts as Doctor Neo Cortex's guide. He is the younger twin brother of Aku Aku, and is the exact opposite of him. He often acts as the driving force of an evil plan, enlisting the help of Cortex and his minions in order to take over the Earth and lead to the creation of the Cortex Empire.