Jabber Wonger is a character from the manga and anime series Gachiakuta. He is an antagonist and a member of the Vandals, a criminal organization composed entirely of individuals known as Givers. At eighteen years old, Jabber serves as one of the primary combatants for this faction, acting under the leadership of Zodyl.

Jabber possesses a very distinctive and memorable appearance. He is a young man with long, thick dreadlocks that are his most prominent feature, accompanied by heavy eyebags that give him a perpetually tired or intense look. His clothing is a patchwork of mismatched fabrics, including a crop top with wide sleeves and three different collars, incredibly baggy pants made of sewn-together patterns, and handmade, slipper-like shoes. He also wears a large fabric waist belt with leather belts tied over it. His most defining accessory is his jinki, a set of ten rings that he wears on all of his fingers.

Jabber's personality is dominated by a psychotic and intense love for battle. He is often seen with a wide, maniacal grin when fighting, and he experiences great pleasure from combat. This extends into a clear masochistic streak, as he enjoys receiving pain just as much as inflicting it, leading another character to brand him a super masochist. He is willing to damage himself or push his body to its limits simply to prolong a fight. Despite this seemingly chaotic nature, Jabber is also highly perceptive and intelligent in combat, able to quickly analyze an opponent's abilities and find their weaknesses. He only acknowledges those he deems strong, such as the Cleaner Zanka Nijiku, and shows immediate disinterest in and disregard for those he considers weak or boring. According to the author, Jabber lacks any dark or traumatic past that would explain his behavior; he is simply a person who has lived a happy life and developed this battle-loving personality.

Jabber's primary motivation is the pursuit of a gratifying fight. He lives to find and battle worthy opponents, and this desire overrides most other concerns. He is not driven by grand ideology or revenge but by the sheer thrill of combat. His role in the story is that of a significant antagonist for the protagonist, Rudo. When word spreads about Rudo, a person from the sky who is also a Giver, Jabber becomes intensely interested and begins searching for him, even going so far as to track down and kill Abyss workers for information. He is a central figure in the Vandals Trap arc, where he confronts Rudo and his allies. His objective is to capture Rudo on someone else's orders, but he becomes personally engrossed in testing the boy's strength. His role serves as a major physical threat that forces Rudo to grow and understand his own powers under desperate circumstances.

Jabber's key relationships are defined by his obsession with strength. He has a notable fixation on Zanka Nijiku, a Cleaner he fought previously and considers a worthy rival. He disregards other characters like Griss Lubion, whom he views as weak and uninteresting. While he is a member of the Vandals, his loyalty seems secondary to his personal desire for battle, and his competitive energy contributes to the group's volatile dynamic. His primary point of development in the story so far has been his confrontation with Rudo. In this battle, he is forced to adapt and problem-solve when his initial attacks fail against Rudo's unique defensive jinki, demonstrating his sharp tactical mind. He ultimately devises a clever counter by injecting himself with his own poison to enter an unconscious, instinct-driven state that the defensive ability could not read.

Jabber is a Giver, and his jinki is named Mankira. It is a unique set of ten rings, with each ring on his fingers serving as a part of the whole. His primary ability allows him to extend these rings into sharp, poisonous claws. The true danger of Mankira lies in the various toxins Jabber can deploy. He can inject opponents with different types of poisons, including paralytic agents, hallucinogens that cause terrifying visions, and neurotoxins. He demonstrates immense control over his arsenal, being able to switch between three different types of poison loaded in his right hand, though adding a new one requires erasing an existing type. Notably, the poisons he uses against strong opponents are non-lethal, as killing them would end the fight prematurely, though he has no such qualms about disposing of weak enemies. He also possesses incredible speed, allowing him to appear behind opponents in the blink of an eye, though this rapid movement seems to tire him over long distances. In a more advanced application of his power, Jabber can inject his own toxins into himself, using them as a potent anesthetic or to trigger a mindless berserker state that overrides his conscious thoughts and, by extension, abilities that read an opponent's hostile intent.