Garlic Jr. wants revenge on Kami because years ago Kami and Garlic (Garlic Jr.'s father) were running for the position of Kami-Sama of Earth against each other. Kami realized Garlic's true intentions and put him out of business. Garlic Jr. appears twice in DBZ, once in movie #1- Dead Zone and again in the Garlic Jr. saga. He's the one that unleashed the deadly 'Black Water Mist' which turned everyone who breathed it into one of his mindless minions. He's immortal, but gets locked in the Dead Zone both times he fights the Z team.