Garlic Jr. is a diminutive, tyrant-like villain with blue-green skin, pointed ears, and a white hooded robe, who first appears as the primary antagonist of the Dragon Ball Z film Dead Zone. His entire existence is driven by a deep-seated grudge against Kami, the Guardian of Earth. In ages past, Kami defeated Garlic Jr.'s father, also named Garlic, during a contest for the position of Guardian, subsequently imprisoning the elder demon in a realm of darkness. This familial humiliation and loss became the foundation of Garlic Jr.s consuming desire for revenge against Kami and his allies.

In terms of personality, Garlic Jr. is cunning, arrogant, and deeply sadistic. Upon successfully using the Dragon Balls to wish for immortality, his arrogance grows exponentially, as he believes his inability to die makes him truly invincible and above all consequences. He takes particular pleasure in psychological torment, such as when he attempted to force a young Gohan to fight against his own mentor, Piccolo. Despite his sophisticated and commanding demeanor, he is prone to reckless overconfidence and fails to learn from his past errors. A notable flaw is his reliance on his ultimate technique, the Dead Zone, which backfires on him and leads to his own imprisonment on two separate occasions.

Garlic Jr.s primary motivation is twofold: to exact vengeance upon Kami for imprisoning his father and to establish his own reign of terror over Earth. The first step of this plan involves gathering the Dragon Balls. He uses his wish not for conquest directly, but to secure eternal life, ensuring that no physical retaliation can stop him. Once immortal, he shifts his focus to settling the old score with Kami and eliminating anyone who protects the Earth, such as Goku and Piccolo. In his later return during the anime-exclusive Garlic Jr. Saga, his goal expands to global enslavement; he seeks to use a mystical Black Water Mist to transform the entire population of Earth into mindless, vampiric servants under his command.

His role in the story is that of a persistent, supernatural threat tied to the history of Earth's guardianship. Unlike many enemies who arrive from space, Garlic Jr. is a demonic figure whose origins are directly connected to Kami's past. He serves as a unique antagonist because he is the first villain in the series to successfully achieve immortality, forcing the heroes to defeat him through banishment rather than destruction. Furthermore, he is the only movie villain to return for an extended story arc in the main anime, taking place in the chronological gap between the battles with Frieza and the arrival of Future Trunks. In this saga, he escapes from the Dead Zone when the Makyo Star, a rogue planet that empowers his race, passes near Earth. He then besieges Kami's Lookout, captures Kami and Mr. Popo, and unleashes the Black Water Mist, leaving only Gohan, Krillin, and Piccolo to defend the planet.

Key relationships define his actions. His hatred for Kami is the central driver of his schemes, representing a vendetta passed down from his father. His view of his father is one of admiration, and he seeks to complete Garlics original ambition of universal domination. He commands a group of loyal henchmen; in the film, these are the demons Nikki, Ginger, and Sansho, while in the anime saga, he leads a more powerful team known as the Spice Boys, consisting of Spice, Vinegar, Mustard, and Salt. His relationship with the young hero Gohan is particularly significant. After Gohan is responsible for his initial defeat, Garlic Jr. develops a specific fear of and rage towards the boy, singling him out for torment and desiring to make him suffer personally before killing him. He also briefly enjoys a strategic advantage by capturing Kami, which weakens Piccolo due to their linked lifeforce, creating a direct tactical relationship between Garlic Jr.s hostage and his opponent's strength.

Garlic Jr. undergoes a notable, though repetitive, development arc. He begins as a vengeful son and arrogant immortal, only to be shocked when the hidden power of a child proves capable of overwhelming him. Upon his return, his personality shifts slightly from pure revenge to a broader ambition for planetary conquest, showing a degree of strategic planning by using biological warfare through the mist. However, he demonstrates no real personal growth; he repeats the same fatal mistake of relying on the Dead Zone to solve his problems, confident that his immortality makes him immune to consequences. His final fate reflects this stagnation: he is once again sucked into his own vortex after the source of his power, the Makyo Star, is destroyed, leaving him shriveled and powerless, trapped for eternity.

In terms of notable abilities, Garlic Jr.s most defining power is true immortality, granted by Shenron. This allows him to survive any injury, including having a massive hole blasted through his torso, and to regenerate instantly from wounds. He possesses the standard suite of superhuman abilities, including flight, ki manipulation, energy blasts such as the Death Impact, and eye beams. His signature technique is the Dead Zone, a powerful ability that creates a portal to a void-like alternate dimension, functioning akin to a black hole that can suck in anything, including his enemies. He can physically transform into a larger, more brutish "Super Makyan" form, a process known as Gigantification, which dramatically increases his size, strength, and durability, though it often reduces his speed. He also demonstrates magical abilities, such as the Sealed Light Beam, which fires rings of energy that can paralyze, shrink, and trap opponents in small glass spheres. In his second appearance, his power is greatly amplified by the proximity of the Makyo Star, and he wields the Black Water Mist, a substance that converts those who breathe it into demonic slaves under his telepathic control.