Seth (Female Body)

Leader of the SIN Criminal Organization, arms and drug trafficker, as a competitor of M. Bison

Ken Masters. Ryu. Chun-Li. Mr Bison.

M. Bison. Weak people. Holding Back.

Enemies who show all their power. Udon for two people.

Android.

Seth is an artificial-intelligence designed to inhabit synthetic humanoid bodies that possess a Tanden Engine. As noted by Capcom-Unity, Seth is genderless[5] (the second playable character with this known distinction after Twelve), going by male pronouns in their first appearance in Street Fighter IV, followed by gender-neutral (nonbinary) in SFV.

In their abdomen, enclosed inside a pattern consisting of the Eight Trigrams of Taoist cosmology known as the Taijitu, is an exposed area, which contains a rotating sphere known as the Tanden Engine, which appears to be the source of their power. Their eye and skin color change to yellow and black respectively, when the Tanden Engine is activated.

In Street Fighter V, Seth has an entirely different appearance; having a body based off of a muscular female physique, with a face heavily resembling that of Juri. This is an interesting coincidence as Juri is the one responsible for his reemergence. This body is known as "Doll Unit Zero". The skin is predominantly a metallic polished silver with smaller black areas separated by glowing orange lines, has very long black hair with a unique hairstyle, tied in a high ponytail along with a single large undorned ox horn, to have it bear resemblance to an aureole or divine halo or tenne, and amber eyes. Although Seth now has a feminine appearance, their voice remains unchanged.

Doll Unit Zero does not seem to exhibit the same capability of stretching its limbs as Seth's previously used body was capable of, but displays a previously unseen ability to rapidly increase and decrease its muscle mass according to the move being used.

Seth is just as intelligent as M. Bison himself, with ruthlessness and cunning to match. Unlike M. Bison, Seth is generally very calm and concise, though he displays a fair bit of arrogance, often through their annoying-by-design tendency to laugh and gloat when using their more powerful moves. Seth also demonstrates a deep knowledge of the philosophy of human nature and the pursuits of purpose and self-awareness. This unusual trait, coupled with their endless thirst for power, implies that Seth intends to become their own entity entirely and not remain bound to M. Bison as another replacement shell. Notably, while Seth appears to be the only "sentient" enhanced being, their Arcade Mode win quote against another Seth implies that at least one other clone may have developed self-awareness.

However, their desire for power and philosophical pursuits is a one-sided and neutral affair; they display very little (if any) morality or respect for life, and value people only for their usefulness. Due in part to their ego, Seth will keep their S.I.N. subordinates in the dark in case they plan to betray them - insubordination is something he refuses to tolerate.

Seth is of the belief that any power is good power, as indicated during their fight with Ryu in Street Fighter IV: The Ties That Bind.[7] In addition, despite their philosophical leanings, Seth displays rather pragmatic, overly skeptical and cynical displays of disbelief in more intrinsic and spiritual views on life; their Arcade Mode win quote against Dhalsim states that if the latter's techniques were truly mystic, they could not possibly imitate them.

due to serious systematic errors that occurs with the integration of their brain and the body of Doll Unit Zero, Seth's personality is drastically affected, showing signs of severe psychosis. They become obsessed with hunting down M. Bison to the point that they become delusional, resulting in mistaking both Falke and Ed (due to their exposure to and use of Psycho Power) as Bison during the confrontation.

Seth has made many enemies during their time as both CEO of S.I.N. and the tournament's host, similar to M. Bison, and does not wish for allies due to their paranoia for betrayal.

In Street Fighter IV: The Ties That Bind Seth wanted to capture Ryu so they can use the Satsui no Hado for their own purpose. It's established that Ryu and Seth have different philosophies on power and on how to acquire it. The two would clash, with Ryu emerging the winner.

Even though Seth had served as both a potential new replacement body for Bison and as the CEO of Shadaloo's S.I.N. weapons division, Seth had personally vowed to not be a mere puppet of Bison via their own personal self-awareness as they seek to eliminate Bison and take over Shadaloo themself for their own personal plans of world domination.

Juri sees Seth as a pawn in her attempt to get revenge for the murder of her parents, despite the perverse joy she displays in working for them and brutally dealing with the enemies of S.I.N. Seth is well aware of this, as shown in their ending. Although Juri initially betrayed Seth in order to try to extract her revenge on Bison, she later recovered the salvaged brain of the former S.I.N. leader. This was followed by her placing their brain in the latest model known as "Doll Unit Zero". Despite a warning, she booted the system immediately, thus bringing Seth back into the fray.

Even though C. Viper worked for them , she is against everything Seth and their organization stands for. After the tournament, she states to her superior that Seth was eliminated and continues searching for the remaining 26.

Seth is the 15th of at least 26 enhanced beings that use data collected from the world warriors to create a deadly style of mixed martial arts. Seth claims to be superior as a result of their humanity, while the others are merely puppets. Seth's storyline indicates that they plan to control the remnants of Shadaloo through S.I.N. after M. Bison's apparent death at the hands of Akuma.

Seth also attempts to use Juri Han, a woman who possesses the Feng Shui Engine in her left eye who has a vendetta against Shadaloo. She confronts Seth and unexpectedly offers to work for them, to which they agree.

Seth hosts the Worldwide Fighting Tournament after the Second World Fighting Tournament in hopes of luring Ryu, and then using the Satsui no Hado to complete their BLECE project, but is dismayed at reports that M. Bison has once again returned from death. M. Bison finally encounters Seth and defeats them in combat, afterwards telling Seth that in fact everything that has happened has gone according to M. Bison's plan. After M. Bison leaves, Juri tells Seth that she intentionally pitted the two against each other, but is disappointed that Seth was not more of a challenge for M. Bison. She then crushes them Tanden Engine, leaving Seth dead and twitching on the floor.[citation needed]

One of Seth's brethren is found by C. Viper; she then proceeds finishes said brethren off.[8] After the tournament, C. Viper informs her superiors that the "remaining 26" are in her sights.[8] Whether this statement takes the final bosses encountered by all characters into account is not clear; Ryu encounters what appears to be another "Seth" and defeats them, destroying the BLECE machine as well. It is possible M. Bison may have commanded the remaining "puppets" to wreak havoc on the fighters in and around the S.I.N. compound, but it is also implied that Juri destroyed most of them.

Seth is first seen talking to a scientist about the experiment in the Amazon, wanting to make it commercially viable. Later, Seth discusses BLECE with Viper, revealing that BLECE is used to allow access to fighting energy, which is the reason why S.I.N. abducted the fighters, and are now after Ryu. C. Viper suggests that Seth come to see what Ryu is capable of personally.

On a cruise ship owned by S.I.N, Ryu is in a struggle with Seth, and losing. Seth speaks in length about obtaining ultimate power. Ryu realizes that the power he was looking for is not what he thought, and, indirectly through Seth's speech, found his purpose of seeking strength - to protect what is good and fight evil. Seth laughs and tells Ryu his speech is pure nonsense and attempts to attack him.

Ryu exhibits his new power, a result of rejecting the Satsui no Hado through his enlightenment (the same power Gouken uses and Ken used earlier, but even more powerful, his eyes glowing blue). His power burns the skin off of Seth's hand, and he defeats Seth with an unstoppable Metsu Hadoken, which burns through the android's muscles for a short period of time. After his defeat, Seth is rescued by S.I.N. members.

Seth is eventually cornered by Guile, Cammy, and the U.S Coast Guard, however a Shadaloo helicopter picks up Seth, with Balrog and Vega on board, the latter of whom tells Seth that Shadaloo is the real manipulator.

After the events of Street Fighter IV, the remnants of Seth's biological brain were coupled with the body of one of the Dolls, specifically Doll Unit Zero.

In their character story, Doll Unit Zero is activated by Juri, working on behalf of an unidentified party. Unexpectedly, the doll awakens with Seth's personality, much to her surprise. However the system within Doll Unit Zero warns of systematic errors concerning the personality integration with the body, which results in Seth becoming mentally unstable and bent on finding and defeating Bison. Later, Seth confronts Ed and Falke, both of whom they mistake for Bison, and fights them. Afterwards, Falke realizes that Seth was drawn by her and Ed's use of Psycho Power, making Seth see only the shadow of Bison. With this in mind, Falke and Ed leave, while the delusional Seth continues to claim their superiority.

Seth doesn't have his skills like before because his body now.

but Seth's body is extremelly agile and fast, she can control her hair to make them fist and do a barrage of punchs.