Crimson-Masked Saiyan

"I've already seen that form with the 86th one! I seek a power that lies beyond that!! So, unleash it! The limits of "Son Goku"!! What lies beyond that!!"

- Crimson-Masked Saiyan to Goku

The Crimson-Masked Saiyan is an incarnation of Son Goku from an alternate world. Crimson sought to fully master his body by killing numerous incarnations of Goku.

Appearance
Like his counterpart, Crimson appears essentially identical to Goku, but with slight differences. He has a slightly darker skin tone and more defined and sterner eyes, along with a somewhat skinnier physique. His hair is also a noticeably darker shade of black with only four front spikes and three back ones. Crimson possesses a similar black gi to that of Goku Black's standard outfit, with only his right hand being gloved. He wears a Mask with red cracks, and has a single visible eye that glows pink.

Personality
Crimson shares his personality with Goku and Goku Black, noticeably his power and his obsession with having absolute strength, which led him to seek out and defeat Gokus across various timelines to further augment his own stolen body. He also retains his cunningness, as shown when Shroom revealed that Fu had altered his future in an attempt to use him for his own experiment, but he used this turn of events to manipulate Fu instead and even plan to kill him. He retains his drive to eradicate all mortals for fun, as shown when he wiped out all mortal life from multiple timelines, and also when he explained his plans to use the properties of the Pseudo Verse to his advantage in order to wipe out all mortals in all timelines, which would allow Zero Mortal Plan to become a success in both of those verses.

Background
In long time ago, Fu informed him of his future and eventual death due to his wrong choices. To prevent this from happening, Crimson traveled to various parallel timelines to different versions of Son Goku across timelines. Afterward, he entered the Pseudo Verse upon its creation, while Fu was locked in the Time Labyrinth with Xeno Gogeta.

New Space-Time War Saga
When Goku and Hearts teleport to Vegeta in the Fake Planet Vegeta, they are confronted by Crimson, Crimson arrives in order to fight Goku, whom then asks him about his identity though Crimson quickly avoid answering by attacking Goku. Scarlet later explains the reason why he's here - Kill different versions of Goku to completely master his body and unleashing its true potential. After turning Super Saiyan, he manages to bring down Goku by landing a clean hit, despite Goku using Ultra Instinct Sign, followed by Super Hearts and Vegeta. After impaling Goku through the shoulder with his Violent Fierce God Slicer, he is interrupted from delivering the finishing blow by an exhausted Evil Saiyan Turles, whom he eliminates with a powerful blast, but not before Turles tosses his Three-Star Dragon Ball to Vegeta. Crimson, while being boring after Goku's fail uses Finger Beams to ravage the Pseudo Universe's Planet Vegeta. Goku, Vegeta and Hearts almost nearly die; however, Cell arrive to save Goku's group by teleporting them to another planet, taunting Crimson-Masked Saiyan staying the planet.

Later, after all of the wars in the Pseudo Universe, the Warrior in Black decides to confront Crimson in a battle. Black questions Crimson's true identity that is he Goku Black. Upon being questioned by the Warrior in Black, Crimson replies that he has no reason to answer the question. The two appear to be evenly matched in their base states, before Black transforms into Super Saiyan, Crimson reveals that he needs to collect energy from other beings, which he does by getting them to fight. However, the two begin fighting, with the Warrior in Black revealing that his appearance is nearly identical to that of Goku. Crimson is shocked at the appearance of his opponent. Using the Super Saiyan 2, the Warrior in Black is able to fight on-par with Crimson, who is using Super Saiyan Rosé 2, though Crimson retains a slight advantage. However, the Warrior in Black Clothes is quickly outmatched when Crimson ascends into Super Saiyan 3, placing him at Crimson's punishment.

Crimson then attempts to finish off his enemy with a finger beam; however, he is saved by the untimely arrival of Ultra Instinct Goku and Evil Super Saiyan Blue Vegeta. However, he remains confident in his strength.

Goku and Vegeta then battle against Crimson; however, they're still no match for Crimson. Crimson now flies to kill Goku, Vegeta tries to stop Crimson, but he one-shots Vegeta with a single energy blast. Just then, all Goku's enemies and friends include Meta-Cooler, Cumber, Hearts and Frieza show up to confront Scarlet Mask to buy Goku and Vegeta enough time to fuse. However, it seens like all of their attacks are not even able to damage Scarlet. Cooler later a Scroll of Eternity to summon Majin Omega Shenron as a last hope to confront Crimson. Before Crimson kills everyone, Goku and Vegeta are complete to fuse into Gogeta, whom stops Crimson by punching him as a Super Saiyan Blue.

Power
Crimson was said to have defeated and killed 99 incarnations of Goku, at least one of whom was able to use Ultra Instinct Sign. As a Super Saiyan Rosé form, Crimson quickly takes down Ultra Instinct Sign Goku and holds an edge over Super Hearts, he is also able to obliterate Evil Saiyan Turles with one energy wave - though Turles was already injured from prior fighting.

Later, against the Warrior in Black, during their first, brief clash, the Crimson-Masked Saiyan was able to fight on-par with the Warrior in Black as their respective base states. As a Super Saiyan Rosé 2, Crimson was able to fight on par with the mysterious foe's Super Saiyan 2 power. However, upon using Super Saiyan 3, Crimson was able to swiftly defeat his opponent and even Ultra Instinct Goku and Super Saiyan Blue Evil Saiyan Vegeta are no match for him.

Techniques

 * Flight - The ability to take flight through the manipulation of ki.
 * Ki Blast - The most basic form of energy attack.
 * Darkness Impact - Crimson dashes at the target, punching them away and kicking them down, before following up with a black and red energy wave.
 * Violent Fierce God Slicer - Crimson uses this technique in his Super Saiyan Rosé form in Dragon Ball Heroes.
 * Sickle of Sorrow - A more powerful variant of the Violent Fierce God Slicer, Crimson utilizes this technique in his Super Saiyan Rosé form.
 * Pitch-Black Conviction - Crimson's Super Attack in his Super Saiyan Rosé form. Crimson pulls out the Sickle of Sorrow, creating a time-space rift behind the target, and slashes through both.
 * Saiyan Power - Wielding the body of a Saiyan, Crimson is capable recovering from harm much quicker than most. During which, he becomes stronger and more efficient compared to before the more he struggles in battle and is harmed. As he naturally wields divine ki, this ability is more advanced than ordinary Saiyans. Mere moments of pain and minor injuries show a considerable boost to his might. Even more, he appear able to recover from injuries within seconds.
 * Finger Beam - Used by Crimson to kill the Warrior in Black.
 * God Rending Light Bullet - Used by Crimson to use the technique to finish off both Vegeta.
 * Blades of Judgement - In a vision of his plan, Crimson is shown using this attack on the fake mortals.
 * Imperial Wrath of Judgment - Crim son's Super Attack in his Super Saiyan Rosé 2. Crimson creates an energy sphere and throws it at the target, trapping them inside it. Crimson then gestures at the sphere to detonate it.
 * God Binding Light Bullet - Crimson's Super Attack as Super Saiyan Rosé 3 form.

Super Saiyan Rosé
Crimson is capable of taking on the Super Saiyan Rosé transformation.

When he uses this form, the upper part of his mask breaks off, revealing his left eye, with a blood-colored eye and a pink-colored eyebrow.

Super Saiyan Rosé 2
Crimson is capable of transforming into the divine equivalent to the Super Saiyan 2 transformation.

In this transformation, his hair becomes spikier, his forehead has only three bangs over it, and the aura takes on a jagged, fiercer-looking appearance rather than a smooth or flowing like it's predecessor, along with his aura radiating purple-colored bio-electric lightning.

Super Saiyan Rosé 3
Crimson is also capable of further advancing Super Saiyan Rosé's power into a divine Super Saiyan 3 transformation.

In this form, his hair reaches down to his thighs, and his muscle mass noticeably increases. The eyebrows vanish completely, while the brow ridges become larger and more pronounced. with his aura retaining it's radiating purple-colored bio-electric lightning.

Equipment
Time Breaker Mask - Crimson wears a Time Breaker Mask, which is stolen from the 96th target. It grants him a significant power boost. While the mask normally places the wearer under the control of the person who gave them the mask, Crimson appears to retain full control of himself, likely due to either his divine status or his extremely powerful will.

List of characters killed by the Crimson-Masked Saiyan

 * Son Goku – Killed by Black after stealing his body.
 * 99 alternate Gokus – Defeated and killed by Crimson for his goal of fully mastering Goku's body and making it his own.
 * Turles (CC) – Killed by Crimson after Turles attacking him.