Mu Chuan

Biodata

Feature	Details
Name	Mu Chuan (穆川)
Alias(es)	Boss; King; Lord
Species/Race	Saiyan; later gains the Frost Demon bloodline 1 45
Gender	Male
Age	16 at the time of his transmigration; 17 after training in the Hyperbolic Time Chamber 1 40
Affiliation	Evil Saiyan Legion (leader); formerly the Frieza Force 10 16
Occupation/Role	Saiyan squad captain; trainer and leader of the surviving Saiyans
Status	Alive 50
First Appearance	Chapter 1, “Soul Transmigration to the Dragon Ball World!”

Power Progression

Stage / Realm / Level	Chapter	Notes
2,400 combat power	1	Awakens as a mid-level Saiyan after transmigrating; receives the Sign-in System and Zarbon Transformation.
4,000 combat power	3	Uses Zarbon Transformation against Huan'er Planet's strongest creature, raising his power from 2,400 to 4,000.
7,100 → 13,000 base combat power	5	Gains 1,000 battle power from a sign-in, then pushes his base power beyond 13,000 through gravity training and injury recovery.
20,000 base combat power	11	Conceals his actual strength; his scouter reading is 9,400, while Zarbon Transformation can raise him to at least 30,000.
242,000 combat power	12	Two check-ins near Frieza grant 100,000 battle power, placing him beyond the Ginyu Force.
822,000 combat power	17	Reaches this level through sustained gravity training during the Saiyans' flight to the edge of the universe.
Over 1,000,000 base combat power	18	Continues training while heavily suppressing himself with gravity equipment.
1,300,000 base / 13,000,000 with Great Ape Power	20	Demonstrates controlled Great Ape Power, which multiplies his combat power tenfold while retaining humanoid form.
1,500,000 base / 15,000,000 with Great Ape Power	27	Uses Great Ape Power immediately against Slug.
Nearly 40,000,000	29	Awakens Pseudo Super Saiyan after Slug nearly kills him; the form provides nearly a thirtyfold increase.
Over 3,000,000 base / 90,000,000 Pseudo Super Saiyan	32	Reaches a training bottleneck during the journey to Earth while adapting to Great Ape Power as a normal state.
Around 5,000,000 base combat power	34 35	Gains Ki Control through sign-in at the Heavenly Temple and can fully release or suppress his energy.
11,000,000 base combat power	37	Reaches the threshold that triggers his first Super Saiyan transformation inside the Hyperbolic Time Chamber.
14,500,000 base combat power	40	Recorded after one year of Hyperbolic Time Chamber training.
725,000,000 Super Saiyan	43	Fully transforms before Frieza; Super Saiyan increases his 14.5 million base power fiftyfold.
850,000,000 combat power	45	Overpowers Frieza before receiving the Frost Demon bloodline.
Over 1,000,000,000 combat power	46	Gains the Frost Demon bloodline and survives Frieza's attempt to leave him in space.
1,700,000,000 peak combat power	47	Combines the Saiyan and Frost Demon bloodlines while in Super Saiyan form.

Background / History

Mu Chuan was originally a young man from Earth who died after being struck by a speeding motorcycle. His consciousness transmigrated into the body of a sixteen-year-old wandering Saiyan aboard Frieza's spaceship. The body's parents had opposed King Vegeta, wandered the universe, and were killed by aliens; the original Mu Chuan survived until his ship was destroyed in an asteroid belt and Frieza's forces recovered him. 1

Upon awakening, Mu Chuan received the Sign-in System and Zarbon Transformation. He killed the Frieza Force soldiers who taunted him, but Frieza spared him only because he was Saiyan and forced him to work off the damage to his energy pod. Zarbon made him captain of a small alien squad. 1 2

On Huan'er Planet, Mu Chuan ordered the extermination of all life so the world could be sold. After defeating its strongest creature, he received Limb Regeneration from the system. He then used Solas Planet's technology to commission gravity equipment, a gravity chamber, and a durable personal spaceship, beginning the extreme training regimen that rapidly increased his strength. 3 4 5

Appearance

Mu Chuan is normally seen in Saiyan battle armor and frequently wears gravity equipment during training. His appearance changes substantially between transformation states. 3 5 29

• Zarbon Transformation — His muscles double in size and his face becomes slightly rounder, but he does not become as grotesque as Zarbon. 3
• Great Ape Power — He retains a humanoid form while wielding the power of a Great Ape; a crimson aura surrounds him. 20 27
• Pseudo Super Saiyan — Golden radiance envelops his body, while his demeanor becomes notably calmer and more lethal than in Great Ape Power. 29
• Super Saiyan — His hair and pupils turn gold, and his body emits a massive golden aura. 43
• Saiyan–Frost Demon peak — Golden light is joined by purple lightning; his eyes gradually turn purple and his aura resembles Frieza's. 46 47

Personality

Mu Chuan is intensely pragmatic and survival-driven. Having died once and awakened in a universe he knows to be dangerous, he treats power as the only dependable protection. He trains through exhaustion, severe injury, and overwhelming gravity, regarding any period without improvement as unacceptable. 1 5 17

He is ruthless toward opponents and subordinates who he considers expendable. He orders planetary extermination, destroys the Saiyan prison to force its inmates into submission, and uses the Armored Squadron as live training targets. In battle, he avoids lengthy speeches and attacks opponents while they are vulnerable. 3 10 23 27

Despite this brutality, Mu Chuan is invested in the Saiyans' long-term survival. He leads the survivors away from Frieza, teaches them controlled Great Ape Power, brings them to Earth to learn ki control, and gives them access to the Hyperbolic Time Chamber. His goal is to raise a Saiyan force capable of supporting his future empire. 16 20 35 41 50

Abilities & Skills

Sign-in System

Mu Chuan possesses a system that can perform a random sign-in once per day. Its rewards include combat power, skills, transformations, and bloodlines. 1 3

• Automatically bound to him immediately after transmigration. 1
• Granted Zarbon Transformation, Limb Regeneration, Demon Transformation, Ki Control, and the Frost Demon bloodline. 1 3 16 34 45
• Can directly raise his combat power, though the results vary substantially. 5 18
• Mu Chuan believes proximity to powerful figures improves the likelihood of valuable rewards. 3 12

Zarbon Transformation

A transformation skill obtained through his first sign-in. It greatly increases Mu Chuan's physical power and muscular mass. 1 3

• Raises his combat power from 2,400 to 4,000 during his battle on Huan'er Planet. 3
• Later allows his 20,000 base combat power to reach at least 30,000. 11
• Alters his physique without giving him Zarbon's severely distorted facial appearance. 3

Limb Regeneration

A regenerative ability gained after defeating Huan'er Planet's strongest creature. 3

• Allows him to recover from otherwise crippling injuries.
• Lets him undertake life-threatening training with less concern for permanent injury. 5 21

Great Ape Power

Mu Chuan develops a controlled form of the Saiyans' Great Ape transformation. Rather than becoming a mindless giant ape, he retains his humanoid shape and reason. 19 20

• Multiplies base combat power tenfold. 19 20
• Can be activated at will after repeated practice. 22
• Taught to the Evil Saiyan Legion as their principal survival technique. 20 21
• Greatly increases irritability and berserker impulses, requiring continuous adaptation to avoid losing control. 20 22
• Initially consumes considerable stamina, though Mu Chuan eventually makes it nearly as natural as his base state. 21 32

Pseudo Super Saiyan

A rage-triggered transformation awakened when Slug nearly kills Mu Chuan. 28 29

• Produces golden energy and a calmer but intensely murderous disposition. 29
• Raises his combat power to nearly 40 million against Slug. 29
• Is stronger than Great Ape Power but cannot initially be maintained for long. 29 32

Ki Control

Mu Chuan gains Ki Control by signing in after arriving at the Heavenly Temple. 34

• Allows him to suppress, release, and precisely manage his enormous energy. 34 35
• Lets him sense strength without relying on scouters. 37
• Raises his available base combat power to approximately 5 million. 34 35

Super Saiyan

Mu Chuan becomes the first documented Super Saiyan after training inside the Hyperbolic Time Chamber. 37

• Triggered after his base power reaches 11 million and he confronts emotions tied to his past life. 37
• At 14.5 million base power, the transformation raises him to 725 million combat power. 43
• Enables him to battle Frieza directly and eventually defeat him. 44 50

Frost Demon Bloodline and Demon Transformation

Mu Chuan first gains the Frost Demon race's first-stage transformation skill, described as doubling his combat power, while preparing to leave Frieza's forces. He later obtains the complete Frost Demon bloodline during his battle with Frieza. 16 45

• Grants an aura similar to Frieza's and enables survival in the vacuum of space. 46
• Combines multiplicatively with his Saiyan bloodline rather than functioning as a simple additive increase. 47
• Raises his Super Saiyan peak to 1.7 billion combat power. 47

Equipment / Weapons / Items

• Scouter — Used early to assess combat power; eventually becomes ineffective against Mu Chuan and other high-level fighters. 2 11 35
• Saiyan battle armor — Worn during early missions and battles; badly damaged during the fight with Slug. 3 29
• Gravity chamber — Commissioned from Solas Planet and later installed in his spaceship; the completed version can reach 100× gravity. 5 6
• Gravity equipment — Adjustable wristbands, anklets, and a vest used to suppress his strength and intensify training; individual units can reach up to 100× gravity. 5 18
• Personal spaceship — Built by the Solas People and equipped to carry his gravity chamber. 5 6
• Whistle — Used to exploit Slug's sensitivity to sound and escape his grip. 28

Relationships

• Frieza — Initially Mu Chuan's unwilling superior in the Frieza Force. Mu Chuan later abandons the force, challenges Frieza, attempts to recruit him, and ultimately confirms his elimination. 2 16 47 50
• Zarbon — Frieza's subordinate who assigns Mu Chuan to labor and command of an alien squad; Mu Chuan's first sign-in reward replicates Zarbon's transformation. 1 2
• King Vegeta — Opposing Saiyan ruler whom Mu Chuan is ordered to replace. Mu Chuan leads the Evil Saiyan Legion against him before Planet Vegeta's destruction. 11 12 13
• Cal — The Evil Saiyan Legion's strongest subordinate and second-in-command. Mu Chuan trusts Cal to test Great Ape Power against the Armored Squadron. 23 25
• Greta — One of Mu Chuan's stronger Saiyan followers; fights alongside Cal and later attempts to measure Mu Chuan's power with a scouter. 23 35
• Mr. Popo and the Guardian of Earth — Earthly allies who teach Mu Chuan's group about ki and permit use of the Hyperbolic Time Chamber. 33 35 36
• North Kai — A cautious ally whom Mu Chuan asks to locate a high-tech chip in the Solar System. 40 50
• Slug — A Super Namekian who tries to recruit Mu Chuan. Mu Chuan uses him as a whetstone, awakens Pseudo Super Saiyan, and defeats him. 27 29
• Cooler — Frieza's brother whose Armored Squadron is defeated by Mu Chuan's Saiyans; Mu Chuan also considers acquiring technology associated with Cooler's mechanical form. 22 25 48

Story Role / Major Arcs

Frieza Force and Planet Vegeta

Mu Chuan begins as an involuntary Frieza Force worker, but uses the position to pursue sign-in rewards and gain access to advanced technology. He establishes the Evil Saiyan Legion from Planet Vegeta's imprisoned criminals, trains them through brutal sparring and healing cycles, and is ordered to seize the planet from King Vegeta. 2 4 10 11 12

When King Vegeta launches his rebellion under an Artificial Moon, Mu Chuan orders his legion to retreat rather than face Frieza directly. He and the surviving Saiyans escape Planet Vegeta's destruction, then leave Frieza's side to train independently. 13 14 16

Edge-of-the-Universe Training and Slug

Mu Chuan trains the surviving Saiyans on a barren world, develops Great Ape Power, and uses Cooler's Armored Squadron as a practical test for his followers. After the squadron's defeat, he decides to travel to Earth to learn ki control and pursue Super Saiyan. 17 20 23 25

During the journey, Slug forces Mu Chuan's group to land. Mu Chuan treats the Super Namekian as a needed high-level opponent, but Slug's giant form nearly kills him. Mu Chuan escapes with a whistle, awakens Pseudo Super Saiyan, and defeats Slug. 27 28 29

Earth, the Hyperbolic Time Chamber, and Frieza's Defeat

On Earth, Mu Chuan offers protection in exchange for Popo's instruction in ki control. After gaining Ki Control through sign-in, he enters the Hyperbolic Time Chamber to train for a year and becomes a Super Saiyan. 33 34 36 37

He then seeks Frieza as both a necessary test of strength and a means of preventing further harm. During their battle, Mu Chuan gains the Frost Demon bloodline, reaches a peak of 1.7 billion combat power, and defeats the Emperor of the Universe. 40 45 47 50

Rise of the Saiyans

After Frieza's elimination, Mu Chuan directs the Saiyans' continued use of the Hyperbolic Time Chamber. When they emerge with base combat powers of at least one million, he plans to teach them Pseudo Super Saiyan and eventually guide them toward becoming Super Saiyans. 41 50

Notable Quotes

“I have no use for trash!” 23

“Do not be arrogant or complacent! We still have a long road ahead.” 19

“That's right, Frieza has been eliminated. You don't need to worry too much. You just need to do your best to increase your combat power.” 50