Ok, before I do the bio, I wanna say one thing. I like this guy, I think he's downright bad-ass, but the only problem is; his name. Personally I like it. But did you ever try putting "Garlic Jr pictures" in your search box? The first thing I got back was something about home-made burritos. Another one was 100 reasons while i'm happy. Oi....
Now then, the bio. Garlic Jr is the son of Garlic, and could've been heir to the thrown of Kame. Garlic lost to Kame, but vowed to take the thrown by force. Because of this, Garlic was sealed away forever in the dead zone. Garlic Jr fought Kame for revenge over 300 years later, but failed at the hands of Gohan. As the Makyo Star approached the Earth, it gave him one last chance. Since Garlic Jr is immortal, he had everything he needed to rule the universe, but was another ego-man, and opened the dead zone. This allowed Gohan to destroy the MAkyo Star, leaving Garlic Jr powerless, and was knocked into the dead zone.