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I've turned into a kid!

Sethan (セト神, Seto-shin, lit. "God Set") is the Stand of Alessi, featured in the third part of the JoJo's Bizarre Adventure series, Stardust Crusaders. It is also a member of the Egypt 9 Glory Gods, a group of Stands representing ancient Egyptian gods.

The Stand manifests itself within Alessi's shadow and takes on the appearance of a humanoid with a bird-like head. Anyone who touches it will be de-aged in body, mind, and soul.



Sethan is bound to Alessi's shadow, taking its form but with a distinguished shape, the most prominent feature being its round head, a pointed crest, and large eyes. If the shadow is sideways, Sethan's cruel, jagged beak is revealed.[2] Its design is based on the opening of the Tetsujin 28-go anime, as well as the Nazca geoglyphs.[3]

Sethan represents the Egyptian God of chaos and storms, Sethan.

Color Schemes

The series is known for alternating colors between media, the information presented below may or may not be canon.
Shadow(Magenta fade to black)
Eyes(Yellow eyelids, gray irises)
Eyes(Purple eyelids, red irises)
Shadow(Dark blue)
Eyes(Purple eyelids, yellow irises)
Shadow(Purple fade to pink)
Eyes(Purple eyelids, pink irises)


Sethan is a weak Stand with almost no offensive options, relying on its esoteric power to make its opponent weaker than Alessi. However, this alone makes it a terrifying opponent to face.

Shadow Reflection

Sethan mimics Alessi's hatchet

Because Sethan takes on the form of Alessi's shadow, it imitates and replicates everything he does and has.[2]

Because of this, any weapon Alessi holds is also held by Sethan, allowing it to attack the opponent with the shadow of the weapon.[4] Moreover, the shadow can move independently from its possessor and even partially stick out of a surface to attack.[2][4]

Age Reversal

Polnareff and his stand de-aged

Anyone standing in Alessi's shadow will age backward at a rapid speed.[2] Polnareff, who touched it for a split second, ended up as an approximately 7 or 8-year-old child,[2] while Malèna stood in it for ten seconds and was transformed into a helpless fetus[5] that, without the connection to a womb, would have died within minutes. If a Stand user is de-aged to before they acquired their Stand like Jotaro, they will temporarily lose it.[6]

The mind of the target also ages backward, leading their memories to progressively degrade into vague recollections of things they only knew as an adult (like names of friends or how to manifest a Stand).[4]

If the user is knocked out, all the victims it affected will revert back to their original state.[6]

Chapters / Episodes

Book Icon.png Manga Appearances
Chapters in order of appearance
TV Icon.png Anime Appearances
Episodes in order of appearance
Book Icon.png Novel Appearances
Chapters in order of appearance

Video Games

All-Star Battle R (Various)

Unlock Condition: Win in the Jean Pierre Polnareff vs. Vanilla Ice All-Star Battle Mode Boss Battle

An antagonist from Part 3: Stardust Crusaders. His Stand is Sethan. He likes to taunt the weak, and his catchphrase is "attaboy." He turns Polnareff into a child, but was violently counterattacked in a harsh battle. He then does the same to Jotaro, but is beaten to a pulp and retired.[7]

Stand: Set. Likes to taunt the weak. Turned Polnareff into a child, but even then barely managed to beat him. Did the same to Jotaro, but he was beaten to a pulp and retired.

ASBR Support Effect

Sethan, Stand of Alessi, returns from All-Star Battle in All-Star Battle R to appear as a Support Effect (サポート効果, Sapōto Kōka) titled Sethan's Reverse Aging (子どもに戻すセト神, Kodomo ni Modosu Seto-shin), costing ASBR Coins.png 500G, and decreasing the defense of the opponent of the player who applies it.



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