Sei Mazoku

"*Effort makes you. You’ll regret it someday if you don’t try your best now. Don’t think it’s too late but keep working on it. It may take time, but there’s nothing that gets worse when you practice. You may get sad, but it’s evidence that you're doing good.*"

―Sei's outlook on life and the power that people have

**Sei Mazoku** (魔族セイ, *Mazoku Sei*) is a 24-year-old (25 as of the current Gaim plot) former mercenary-assassin, also known as **S** by the public from his time working. He received a Sengoku Driver and the Banana Lockseed from his kidnappers which allow him to transform into **Kamen Rider Baron** (仮面ライダーバロン, *Kamen Raidā Baron*).

## History

### Early Life

Sei Mazoku lived a rather decent childhood with his brother, Ryoto Mazoku, and his father, Hiroto. Their mother had passed away when he was about ten years old, which left the two siblings in custody of their paternal caretaker. Both Sei and Ryoto often just sat indoors and played video games simply to pass the time; however, this was also done as a coping mechanism in order to help the two with the recovery from their mother’s passing.

Despite that, as time went on, Hiroto grew increasingly more violent with his “discipline” of the brotherly duo, often beating them to the point where they were black and blue, as well as bleeding across the main portion of their bodies (arms, legs, shoulders, chests, torsos, hips, and on some occasions, from their heads). This caused a major rise in resentment and rebellion from Sei to the point where Sei would often be beaten half to death, whereas Ryoto would only receive a simple heavy beating when the two were caught committing acts that were, in their father’s eyes, “unbefitting of boys belonging to the Mazoku bloodline.”

### Departure from Home and Abduction

Eventually (at the point where Sei was around nineteen, nearing twenty, and Ryoto was about seventeen), Sei attempted to get Ryoto to abandon the hellhole that belonged to their father and go on the run with himself; however, out of fear of what would happen should Hiroto have caught wind of such an act, Ryoto adamantly refused and apologized. Sei was understanding, however, and gave his brother a cellphone (which he had managed to purchase after working long enough) that already had his phone number registered within, so that the two were able to keep in contact.

Soon after, Sei took off into the city so as to escape from the wretched clutches of his father. Despite his physical prowess and peak condition, he was soon found (and subsequently incapacitated) by a group of criminals who had been searching for a young man like Sei so that they could perform some type of… “experiment” on him. He was promptly taken to a secret lab underneath the surface of the planet, where genetic-enhancing experiments then took place with Sei himself at the center of them.

After about three consecutive months of experimentation, Sei woke up with no memories of his childhood and had false ones implanted into his head. The point of the experiments was to create a warrior who had no remorse for destroying any living organism; one that would fight ruthlessly until its goal was met. And that goal was the destruction of the Mazoku bloodline, for whatever reason.

### Receiving Gear and Memories Resurfacing

He received a strange belt about two months later, under the pretenses of the company known as **Sengoku** desiring to keep him silent about the atrocities of which they had committed. Sei acted as if he was going to play along, and he did. However, over the course of time, he had discovered something about himself… he had one of his true memories locked away within the deepest recesses of his mind. That memory only continued to return and grow until it was prominent in his mind, every night and every day, to the point where it was all that he could think about.

One windy night, as Sei was preparing to go after his brother and father, a strange gust of wind (or so he thought it was at the time) flew into his room and he felt as though something had slapped him with enough force to send a normal person flying; this sudden surge of wind did indeed cause him to fly back and slam his head on the wall. The result of this was that his true memories suddenly came rushing back to him, and they heavily contrasted with the false memories implanted into his head. This confusion and contrast led him to confront his higher-ups, with the confrontation resulting in Sei surging away from the facility of which he was stationed at for the last four years. He took the belt and two strange lock-like devices that had the designs of a banana and a mango, respectively, along with another one that was black and gold in design.

### First Meeting with Asahi and Gaining a Friend

"*Y'know... you're pretty cool. And you're a strong one. So don't let anyone tell you otherwise, or else I'll have to get involved.*"

―Sei to Asahi on how he views her

Approximately three months after escaping from Sengoku, Sei returned to the company's building, having already been transformed into Kamen Rider Baron. Furious at Sengoku for what they had done to him, he began enacting his vengeance by trying to destroy the company's building. He was met with opposition in the form of Asahi Kanehara, who had transformed into Kamen Rider Ryugen in an attempt to protect the family company. Dissatisfied with the interference, Sei engaged in a battle with her, the fight in question ending with Asahi's transformation being cancelled upon her being struck with a finisher.

Feeling some form of respect as well as sympathy, Sei detransformed himself before pulling a cloth from his jacket pocket, which ended up confusing the girl. He briefly helped to try remedying her situation before then sitting next to her and questioning her purpose for protecting Sengoku. Hearing about how she had lost her mother and her desire to help her father with the company, Sei found himself feeling both empathy and pity (though he was unaware at the time) because of the fact that he went through the same thing with his mother. However, remembering that he made a promise to his brother, Ryoto Mazoku, he reaffirmed his resolution on refusing to let Sengoku get away with what they had done.

Understanding where he was coming from, Asahi made the (quite sudden) decision to trust and support him in his goal, which left Sei confused and briefly stunned. Despite this, he respected her choice and took it rather well, even going as far as to call her his partner. Helping her rise from her position on the ground, Sei introduced himself as **S**, due to not remembering his name at the time, and was somewhat surprised to receive her name in return.

## Kamen Rider Baron

**Banana Arms**
"*Come on! Banana Arms! Knight of spe~ar!*"

―Transformation announcement
**Rider Statistics**

* **Rider Height**: 208 cm
* **Rider Weight**: 114 kg

**Ability Parameters**

* **Punching Power**: 8.8 t
* **Kicking Power**: 12.4 t
* **Maximum Jump Height**: 24 m
* **Maximum Running Speed**: 100 m per 6.1 seconds

**Banana Arms** (バナナアームズ, *Banana Āmuzu*) is Baron's banana-based default form. Accessed through the Banana Lockseed, this form bears the **Burn Casque** (バーンカスク, *Bān Kasuku*, a pun on "**Ban**ana") helmet with the **Burn Sight** (バーンサイト, *Bān Saito*, see "Burn Casque") visor.

While assuming Banana Arms, Baron dons the **Banana Armor Part** (バナナアーマーパート, *Banana Āmā Pāto*) and his Arms Weapon is the Bana Spear.

This form is Baron's most balanced form. In this form, Baron's punching and kicking power is stronger than Gaim's. However, as a tradeoff, Baron's maximum height and running speed is lower than Gaim's, allowing him to jump slightly higher than Gaim in Pine Arms, but leaving him able to barely outrun Gaim in Pine Arms. While Banana Arms appears to be purely offensive with little to no defense, Baron can use the Bana Spear to create banana projections that can absorb hits. When Sei eats the Fruit of Helheim, his abilities are strengthened by the fruit, allowing him as Baron in Banana Arms to almost go head-to-head against Gaim in Kachidoki Arms.

This Arms has two finishing attacks.

* **Cavaliend** (キャバリエンド, *Kyabariendo*): Baron activates the Squash function on his Sengoku Driver and delivers an extremely powerful kick in the shape of a banana.
* **Spear Victory** (スピアビクトリー, *Supia Bikutorī*): This finisher has three variations depending on which function Baron activates from his Sengoku Driver.
	+ **Squash:** Baron releases a spear-shaped beam of energy from the Bana Spear to thrust at the enemy.
	+ **Au Lait:** Baron smashes down his enemy with a giant banana-shaped energy projection from the Bana Spear. When stabbed into the ground, however, the energy travels along the ground for a bit before rocketing back up in the familiar banana-shaped projecting, skewering whatever is in its path.
	+ **Sparking:** Baron stabs the Bana Spear into the ground, creating multiple banana-shaped projections which hit an opponent several times from below. This also provides as a defensive wall against incoming attacks.

**Appearances:** Ex-Aid #18, Gaim/Drive #1, Gaim Flashbacks #1