In Dandadan, they initially play a minor antagonistic role during the Turbo Granny Arc but later emerge as the primary villains throughout the Serpo Arc.

Appearance

In Age-Restricted Manga

Overview

The Serpo, being an entirely male species, are incapable of natural reproduction. To maintain their population, they developed sophisticated cloning methods. Yet, cloning only creates genetic duplicates, hindering their species from evolving biologically. Recognizing the limitations of this process, the Serpo devised a more radical solution: abducting humans from Earth to extract their reproductive organs—colloquially termed “bananas”—in hopes of overcoming their reproductive dead end.

Physical Characteristics

The Serpo typically present themselves in humanoid disguises with gray skin and distinctly masculine features. Their attire is uniform: white collared button-up shirts neatly tucked into gray dress pants, complemented by leather belts and brown shoes. Their facial features are unsettling, with thin lips stretched into unnervingly wide smiles that appear unnaturally fixed.

Beneath these disguises, the Serpo’s true forms are far more alien in appearance. Their heads are elongated and slug-like, with sharp angles and pronounced, fleshy lips that frame rows of broad, prominent teeth. Their torsos and shoulders are wide and sharply contoured, while black markings cover much of their bodies. Each hand possesses two fingers and two thumbs, and their feet end in clefted shapes. One of their most striking features is their crystalline, headlight-like eyes, which vary in color from individual to individual—ranging from pink, yellow, and cyan to red, green, and purple.

Gallery

In Anime and Original Manga

In Age-Restricted Manga

This manga contains content intended for mature audiences. It explores complex themes and may not be suitable for younger readers. The storyline delves into deep character development, intense drama, and emotional narratives. Viewer discretion is advised.

In FanArt

Discover stunning fanart featuring unique interpretations of your favorite characters. From dynamic action scenes to stylish outfits, explore creative artworks that bring them to life.

Psychological Characteristics

The Serpo exhibit aggressive and forceful behavior when abducting humans, yet they remain entirely unaware of the cruelty of their actions, genuinely believing their methods to be peaceful. Their preference leans toward abducting female humans rather than males, and they express disdain toward individuals who resist, viewing such behavior as primitive and barbaric. Additionally, the Serpo harbor a keen fascination with humans who possess supernatural abilities granted by spirits, as these powers often exceed the capabilities of their own advanced technology.

Beyond their unconscious hostility toward humans, the Serpo display a blunt and detached demeanor when dealing with their subordinates. They show little regard for the well-being of those they employ, perceiving them as expendable and easily replaceable. This callous attitude is evident in their treatment of the Dover Demon, who was tasked with combating Momo, Okarun, and Aira. When the Dover Demon underperformed, the Serpo attempted to motivate him through punitive measures, including docking his salary and forcibly injecting him with a mutagenic fluid designed to enhance his speed and strength—despite his clear protests and unwillingness.

Biology

As artificially manufactured clones, the Serpo possess bodies that are primarily mechanical with partial organic components, as indicated by their ability to bleed. Their cybernetic physiology grants them remarkable resilience, enabling them to survive severe bodily trauma, including the loss of limbs or even their entire lower halves without succumbing to fatal damage.

Internal Tools

The Serpo’s mechanical bodies are equipped with an array of built-in tools, concealed within their groin and abdominal regions:

Reproductive Tool

Scissors

Body Cables

Data

If this data is overwritten at the moment of their creation, the resulting Serpo takes on an alternate form known as This Man (ディス マン, Disu Man). In this form, the Serpo resembles a partially bald man with thick eyebrows, dressed in a zip-up sweatshirt and loose sweatpants. This transformation also affects their use of psychokinesis: rather than projecting energy by thrusting their hand forward or forming the letter “T,” they instead trigger their abilities by clapping their hands together.

Abilities and Powers

Super-Intelligence: The Serpo exhibit extraordinary intelligence, particularly in scientific and technological fields. Their advanced knowledge enables them to clone themselves, integrate mechanical tools within their bodies, and construct sophisticated spacecraft such as UFOs. Additionally, they possess the capability to engineer specialized devices, including those required to deploy the phenomenon known as Empty Space.

Psychokinesis

Techniques

Six Sense Organ (六根, Rokkon)

Serpoian Form Serpo-Grammetry (セルポ式測量法, Serupo-shiki Sokuryō Hō)

Amazing Zone (すごいゾーン, Sugoi Zōn)

Synopsis

Past

During the 1960s and 1970s, the United States military, with the aid of aliens who had survived the Roswell Incident, organized a study exchange program that sent twelve humans to Planet Serpo. Of the twelve, two perished on Serpo, while eight returned to Earth only to succumb later to the effects of the planet’s intense ultraviolet radiation. The remaining two chose to remain on Serpo, and their ultimate fates remain unknown.

Turbo Granny Arc

While at Nagi Hospital, the Serpo encounter Momo Ayase and forcibly abduct her, intending to extract her reproductive organs. Before the procedure can begin, Okarun, possessed by Turbo Granny, unexpectedly manifests from Momo’s phone and attacks the aliens. Though the Serpo manage to subdue Okarun using their psychic abilities, they resume their procedure on Momo. However, their manipulation of her brainwaves accidentally unlocks Momo’s latent psychic powers, allowing her to destroy their ship and defeat the Serpo.

Serpo Arc

However, the situation shifts when Momo arrives and overrides the Serpo’s psychic powers with her own, enabling Okarun and Aira to resume their battle. To regain control, the Serpo forcibly mutate the Dover Demon to enhance its combat abilities, but the creature’s performance against Okarun and Aira’s coordinated attacks proves disappointing. The Serpo’s problems worsen when Nessie, hired specifically to counter Momo, unexpectedly turns against them. One Serpo is swiftly bisected while berating Nessie for its failure, and another is decapitated soon after, leaving the Dover Demon horrified by the sudden turn of events.

However, after the trio successfully evades several attacks, the fused alien depletes its water supply. As it absorbs water from its neck to reload, Okarun, Momo, and Aira deduce that targeting its neck could disrupt its ability to fire continuously. Aira uses her hair to constrict Serpo Dover Demon Nessie’s neck and prepares to strike. Yet, before she can land a blow, the creature counters with a punch, revealing that despite its bulky form, it excels in close combat thanks to the Dover Demon’s mantis shrimp-like arms.

Desperate, Serpo Dover Demon Nessie clamps Momo in its jaws, attempting to bite her while holding her in place, hoping she will eventually drown. Meanwhile, it begins charging another high-compression water blast, aiming to bisect her. Before it can unleash the attack, Aira’s hair once again coils around its neck, immobilizing it. Seizing the opportunity, Okarun uses the taut hair as a runway, propelling himself at high speed through the creature’s body, obliterating Serpo Dover Demon Nessie and ending the battle.

Trivia

• The design of the Serpo’s body draws heavy inspiration from the Dada race featured in the Ultraman series, evident in their humanoid shape and alien aesthetics.
  • Additional elements of their physical appearance are influenced by Alien Pegassa, another extraterrestrial species from the same franchise.
  • When executing the Serpo Formula Surveying Method, the positioning of their arms mirrors Ultraman’s iconic stance while firing his Ultra Beam, serving as a deliberate homage to the classic hero.
• The name Serpo holds significance within UFO mythology, often cited in conspiracy theories as either the codename for a clandestine government operation or the name of an alien planet visited by human astronauts.
• Interestingly, the Serpo’s human disguise bears an uncanny resemblance to former Thai Prime Minister Thaksin Shinawatra. This unintentional similarity became the subject of widespread online humor, with Thai fans creating viral memes that playfully juxtapose the alien’s unsettling grin with images of the politician.