Lizard of Oz

The Lizard of Oz, sometimes known as the Brain of Oz, is the second boss in the video game Gex: Deep Cover Gecko. He has the appearance of a large brain with a face. Gex must avoid his fireballs while fighting the Rezlings, and when a cannon appears, Gex must fire the cannon at him to damage him. Five hits will destroy him.

Trivia

 * He is an obvious reference to the Wizard of Oz, and his arena is the Emerald City.