Michael Gehabich or Dr. Michael, is a character in the anime Bakugan Battle Brawlers. He is the grandfather of Alice Gehabich. Similar to how Alice can become Masquerade, he also has a negative split personality in the form of Hal-G, as whom he is seen as for the majority of his appearances in the anime. He first developed Hal-G when a large amount of negative energy from the Silent Core infiltrated his lab. After Naga was defeated by Drago, he was cured of Hal-G and returned to his normal self.