Kast

Biodata

Feature	Details
Name	Kast (卡斯特)
Species/Race	Saiyan
Gender	Male
Origin	A man from Earth who died in a traffic accident and transmigrated into the Dragon Ball universe. 1
Occupation/Role	Saiyan warrior; later commands forces in the Demon Realm. 80
Status	Alive; displaced into an unknown, deteriorating world after the Tournament of Power. 440
First Appearance	1

Power Progression

Stage / Realm / Level	Chapter	Notes
Base combat power: 10	1	Identified as a low-class Saiyan warrior after awakening in a cultivation tank.
Great Ape	1	Transformed after absorbing over 17 million Blutz Waves from a moon; unlike most Saiyans, retained his sanity.
Base combat power: 500	1	Reached after two years of systematic physical and ki training.
Base combat power: 1,300	1	Reached after five years alone on an uncivilized planet; suppressed his displayed power to 300 before returning to Planet Vegeta.
Base combat power: ~1,600	5	Increased after a Senzu Bean healed accumulated injuries, triggering Saiyan recovery growth.
Base combat power: ~50,000	7	Achieved through a year of Hyperbolic Time Chamber training under tenfold gravity and weighted clothing.
Base combat power: over 500,000	12	Gained after consuming Fruit of the Tree of Might.
Base combat power: 5,000,000	12	Reached after consuming Tree of Might fruit to his physical limit; hit a Super Saiyan bottleneck.
Super Saiyan	31	Awakened during a near-fatal beam struggle with Frieza, breaking the limits of his bloodline.
Potential Unleashed	53 55	Completed Old Kai's ritual and made the resulting power permanent; his base strength became hundreds of times greater than before.
Super Saiyan 4	262	Achieved a dark red-furred form during his battle with Whis; its power approached seventy percent of Beerus's.
Ultra Instinct Sign	269	Learned automatic evasion and advanced perception through his spar with Whis; he regarded this as an initial stage requiring further refinement.
Destruction-energy mastery	351 352	Endured, controlled, and absorbed Hakai energy without becoming a God of Destruction or candidate.
Ultra Instinct as instinct	440	Had absorbed Ultra Instinct so fully that it no longer required a deliberate transformation.

Background / History

Kast was originally a Dragon Ball fan from an ordinary Earth. He died when his vehicle lost control, then awakened in a Saiyan cultivation tank. Classified as a low-class warrior with a combat power of 10, he was launched toward an alien planet inhabited only by mindless beasts. 1

He survived by transforming into a Great Ape under the planet's moonlight, killing the surrounding creatures and establishing a shelter. His transmigrated soul seemingly granted exceptional training efficiency and ki control; over five years, he taught himself flight, ki blasts, weighted training, and methods of concealing his strength. 1

Knowing Planet Vegeta's destruction was approaching, Kast returned while concealing his true combat power. He later traveled to Earth, where Korin gave him Senzu Beans and the Guardian of Earth accepted him as a student. Kast mastered ki sensing in less than a day under Mr. Popo, then spent a year in the Hyperbolic Time Chamber training under increasing weighted resistance. 5 6 7

After leaving Earth with the Dragon Balls, Kast pursued increasingly dangerous methods of growth. He consumed Fruit of the Tree of Might, destroyed the tree to return its stolen energy to the planet, defeated Captain Ginyu and the fleeing Frieza Army soldiers, and eventually fought Frieza himself. His near-death struggle against Frieza awakened his Super Saiyan form. 13 16 31

Laila later brought Kast to the Supreme Kai World to obtain power capable of defeating Majin Buu. Kast extracted and deliberately broke the Z Sword to release Old Kai, then intuitively began the elder's potential-unlocking ritual before receiving proper instructions. With his potential permanently unleashed, he overwhelmed Majin Buu while testing an energy attack capable of preventing regeneration. 49 53 72

In the Demon Realm, Kast established control through Dabura and recruited strong warriors through combat trials. He was willing to discard failures and destroy those who deceived him, while secretly monitoring Dabura's eventual betrayal. After eliminating Dabura, he honored his promise to make Bex the Demon King and captured a berserk Saiyan with Legendary Super Saiyan traits for future use. 80 83 93 94

Kast later focused on evolving through his Saiyan tail and Blutz Waves, ultimately reaching Super Saiyan 4. His spar with Whis led to his rapid comprehension of Ultra Instinct, bringing him to the attention of Beerus and other gods. 150 262 269

During the Tournament of Power, Kast dominated mortals, Gods of Destruction, and prospective angel opponents alike. His stated purpose was not to display strength, but to force evenly matched opponents into breakthroughs. After testing the Grand Minister's power, he was transported through a broken crystal wall into an unknown world permeated by unstable rule-based lightning. 430 440

Appearance

Kast is introduced as a young Saiyan with a delicate, youthful face and long black hair that rises unnaturally against gravity. His appearance changes as he grows, but his Saiyan tail remains a defining feature. 1

• Long black hair, with bangs naturally parted over his forehead. 4
• Monkey-like Saiyan tail, usually wrapped around his waist. 1
• Initially wears a blue bodysuit, white soft armor, white gloves, and a green ear-mounted scouter. 1
• Wears a black robe embroidered with a silver dragon while operating in the Demon Realm. 87
• Super Saiyan 4 gives him dark red fur. 262

Personality

Kast is methodical, reserved, and relentlessly focused on long-term survival. Even as a child, he hid his combat power to avoid attracting Frieza's attention and trained because he believed future enemies would far surpass his current strength. 1 113

He respects teachers and useful knowledge, approaching Korin, the Guardian of Earth, and Mr. Popo with courtesy despite already being stronger than anyone on Earth. His pursuit of improvement is extreme: he endured near-death conditions in the Hyperbolic Time Chamber because the sensation of growing stronger became addictive. 6 7

Kast can also be calculating and ruthless. In the Demon Realm, he used combat trials to identify capable subordinates, eliminated deceivers, manipulated traitors for information, and treated Majin Buu as a test subject. 72 80 84

Despite this severity, he protects people he considers his own. He intervened to save Shin from Dabura, prepared contingencies for losing control during his Blutz Wave transformation, and chose to absorb Padas's unstable energy to save him. 64 150 198

Abilities & Skills

Ki Control, Sensing, and Flight

Kast's ki control is unusually refined; he describes manipulating ki as naturally as moving his limbs. 1

• Can suppress his combat power precisely, including reducing a reading of 1,300 to 300. 1
• Learned to fly and fire ki blasts using information stored in his Saiyan ship. 1
• Mastered external ki sensing under Mr. Popo in less than one day. 6
• Can completely restrain his aura, becoming undetectable without direct sight. 6
• Uses barriers to block energy barrages. 89

Energy Techniques

Kast uses destructive ki attacks with high precision and can tailor them for different purposes.

• Fired a ki blast that reduced an alien creature to dust. 1
• Developed a homing energy sphere capable of tracking fleeing targets over long distances. 16
• Erased Majin Buu's body with concentrated energy attacks, testing whether complete destruction could overcome Buu's regeneration. 72
• Can produce sword-like energy at range through the Z Sword. 49

Saiyan Transformations

Kast retained his tail because he considers it both a weakness and the key to a higher Saiyan evolutionary path. 113

• Great Ape — retains full sanity while transformed, allowing him to control its power rather than become berserk. 1
• Super Saiyan — awakened during his battle with Frieza after reaching the limit of his bloodline. 31
• Potential Unleashed — a permanent enhancement gained through Old Kai's ritual rather than a temporary transformation. 55
• Super Saiyan 4 — achieved through Blutz Wave-based evolution; this is his primary physical-strength transformation in later battles. 262 340

Ultra Instinct

Kast learned Ultra Instinct through observation, body control, and combat with Whis rather than formal instruction. 269 316

• Automatically senses and evades incoming attacks. 269
• Anticipated Hit's position after Hit activated his special technique, countering him before he could strike. 423
• Eventually integrated Ultra Instinct into his instincts, no longer needing to transform to use it. 440
• His initial Ultra Instinct state still required further tempering for complete proficiency. 269

Destruction Energy and Rule Analysis

Kast mastered Hakai energy through physical endurance and analysis rather than divine authority. 351 352

• Can receive Destruction energy directly without immediate annihilation due to his extreme physical strength. 352
• Can gather and control Hakai energy in his hand. 351
• Analyzes the “power of rules” contained within Destruction energy. 433
• Avoided the conventional God of Destruction vulnerability tied to a Supreme Kai. 352

Mental Realm

Kast developed a spiritual Great Ape formed from his own power and Saiyan primal nature. 343

• Automatically draws hostile opponents with weaker mental power into a mental realm when they look at him. 343
• The automatic effect is brief and mainly drains mental energy. 343
• When actively used, the realm can imprison an opponent until Kast releases them or they overpower it. 343
• Attacks within the realm can render victims unconscious, damage their minds, or kill their consciousness and soul. 343

Movement, Telepathy, and Retrocognition

• Uses Instant Transmission to escape encirclement and reposition behind opponents. 425 433
• Can communicate telepathically over long distances, having learned the method from Laila. 152
• Possesses Retrocognition, but requires an object connected to the event or subject being investigated. 242

Energy Absorption

Kast possesses an unused ability granted through one of his wishes to Porunga. 198

• Intended to absorb Padas's excessive energy to save him and test the ability. 198
• Had previously lacked an appropriate target or circumstance to use it. 198

Equipment / Weapons / Items

• Scouter / energy detector — Used for combat-power readings, receiving Saiyan signals, and locating powerful ki signatures. 1 4
• Saiyan spaceship — Transported him between planets; its limited navigation forced his return to Planet Vegeta. 1
• Weighted training clothing — Began at 50 kg and was used inside the Hyperbolic Time Chamber under tenfold gravity. 6 7
• Senzu Beans — Obtained from Korin; used for recovery, regeneration, and surviving extreme training. 5 7
• Dragon Balls — Given to Kast by the Guardian of Earth as a parting gift. 7
• Tree of Might seed — Recovered after consuming the tree's fruit. 13
• Z Sword — Pulled from the Supreme Kai World's pedestal, then deliberately broken with Jingang to free Old Kai. 47 49

Relationships

• Korin — Initially gave Kast a jar of Senzu Beans after Kast requested them; later continued to store beans following Kast's earlier advice. 5 103
• Guardian of Earth — Accepted Kast as a student after sensing no evil intent; trained him and entrusted him with the Dragon Balls. 6 7
• Mr. Popo — Taught Kast ki sensing and assisted with his Lookout training. 6
• Laila — Closest companion and romantic partner; she first sought his help against Majin Buu, then developed feelings through years spent together. Kast later expresses his own feelings for her. 31 36 103
• Shin — Ally among the Supreme Kais; Kast saved him from Dabura and used Shin's resources to reach Old Kai. 45 64
• Old Kai — Released by Kast from the Z Sword and performed the ritual that unleashed Kast's potential. 49 53
• Padas — Comrade whom Kast trusted to restrain him if he lost control; Kast later chose to absorb Padas's unstable energy to save him. 150 198
• Dabura — Initially served Kast as a subordinate and guide in the Demon Realm; later betrayed him and was reduced to ashes. 80 93
• Bex — Subordinate who provided intelligence; Kast kept his promise to make him Demon King after Dabura's defeat. 81 93
• Whis — Sparring partner whose evasive techniques helped Kast grasp Ultra Instinct; Whis recognizes Kast's extraordinary potential. 260 269
• Beerus — Rival and source of Destruction-energy experience; Beerus recognized Kast's mastery of God of Destruction power. 351
• Champa — Attacked Kast to test him and was decisively defeated; later helped provide Destruction energy for Kast's experiment. 335 348

Story Role / Major Arcs

• Survival and Saiyan upbringing — Survives alone on a beast-filled planet, develops ki control, and conceals his growing strength from Saiyan and Frieza forces. 1
• Earth training arc — Obtains Senzu Beans, studies under the Guardian and Mr. Popo, and leaves Earth with the Dragon Balls after Hyperbolic Time Chamber training. 5 7
• Frieza conflict — Gains power from the Tree of Might, destroys the Ginyu Force, and awakens as a Super Saiyan during his fight with Frieza. 12 16 31
• Majin Buu arc — Helps Shin and Laila, frees Old Kai, receives Potential Unleashed power, and overwhelms Majin Buu. 45 53 72
• Demon Realm arc — Builds a force through Dabura, searches for a route to further Saiyan evolution, and removes Dabura after his betrayal. 80 93
• Divine evolution arc — Pursues Super Saiyan 4, learns Ultra Instinct through Whis, and studies Destruction energy through Beerus and Champa. 150 269 351
• Tournament of Power arc — Overpowers contestants and gods while seeking opponents capable of forcing his own breakthrough. 420 430
• New World arc — Is transported into a fragile unknown world after testing the Grand Minister's power. 440

Notable Quotes

“Although my current strength is indeed formidable for this planet, in the vastness of the universe, I am nothing more than a grunt—hardly worth mentioning.” 6

“I didn't arrange this battle to crush you and show off my strength. I joined this tournament solely to achieve my own objective.” 430

Trivia

• Kast was a dedicated Dragon Ball fan in his previous life, giving him knowledge of major future threats and characters. 1
• He considers his Saiyan tail an exploitable weakness, but refuses to remove it because it is essential to his preferred evolutionary route. 113
• Kast can retain consciousness as a Great Ape, a trait he attributes in part to living a second life. 114
• He often fights in base form in later arcs because most transformations provide little benefit compared with the stamina they consume; Super Saiyan 4 remains valuable for increasing physical strength. 340