Akefu is the head doctor of TG University Hospital, and presumed mastermind of the Locacaca Organization. He is an elusive figure with almost no public presence despite being in charge of a major institution of medicine.
Akefu is an elderly-looking man with a slightly stocky build, said to be 89 years old. His arms and legs are noticeably slimmer than the rest of his body. He wears a dark-colored hat and suit, along with a lightly colored scarf with a pattern of irregular "-" shaped slits cut into it. He also wears dress shoes and uses a cane to walk.
Later in the story, Akefu is depicted as having a thin furrowed face with prominent cheekbones, sunken eyes, and a large nose. His most notable features are a beard styled into multiple short spikes and a monocle on his right eye. His hair is lightly colored and much thicker than what a human at his supposed age would have. Much like his subordinate Wu Tomoki, the hair on the sides of his head is stylized into many round shapes. The hair on the top of his head is much more natural, although appearing somewhat unkempt. His sideburns feature a similar pattern, but are shaven into rectangles instead.
- Main article: Wonder of U
The true form of Satoru Akefu is that of a Stand. It is an artificial humanoid Stand with a mostly black body. Akefu has a doll-like body, with a massive torso but thin, tubular arms. Each of its articulations, from the waist to the elbows, is a pivot joint. Its body is covered with light circular ridges evenly spaces. It also has a long curved blade at each wrist much like Kars.
Its head has a flattened ovoid shape, still black with the same ridges around its head. Moreover, it has a reverse U-shaped ridge framing its face and two pair of round mechanical eyes that are a throw back to Akefu's monocle. The eyes are decorated with a sun motif, similar to the symbols found on Tooru's outfit.
Akefu is a rather elusive figure despite holding an incredibly prestigious title. He demonstrates an antisocial behavior, completely ignoring Josuke Higashikata, Yasuho Hirose, and Rai Mamezuku, probably on purpose. As the head doctor of TG University Hospital, Akefu seems proud to present the Locacaca 6251 to an audience. He is also a professional and so the first thing he does with the journalist Taoka is to exchange business cards with him. Akefu is a calm individual because his automatic power allows him to get rid of any potential enemy before they can even harm him. Thus, when Taoka threatens to exposes the Locacaca Organization's illegal clinical trial, Akefu calmly points out how disaster may strike the journalist before leaving. Likewise, he calmly confronts Josuke and Mamezuku when he is forced to go to the laboratory.
Akefu seems rather perceptive, as he sees through a trap Josuke has been laying for him.
Akefu is also confident in his own abilities, stating that nothing can approach nor hurt him. However, this turns out to be a facade, as he loses this confidence when Mamezuku closes in and grabs him by his throat. This leaves him nearly vulnerable and frozen on spot, only narrowly avoiding Mamezuku's attack.
- Main article: Wonder of U
Akefu's true identity is a sentient, humanoid Stand named Wonder of U.
Long-range Illusion Creation
Akefu is able to create illusions which can be sent after a specific target. He can disguise himself and take on the appearance of a human, allowing him to interact with ordinary humans. He can also create projections of himself, which can travel quickly between locations by phasing into and appearing on transparent surfaces, such as windows or picture frames.
Akefu's ability is automatic and can be activated on any person who has looked at his back in an attempt to pursue him or otherwise moves toward him. While Akefu's ability is active, targets will experience various instances of conflict which seemingly play out in the most devastating way imaginable. These calamities often involve an affected person repeatedly colliding with objects in their environment, resulting in far greater injury than is possible under normal circumstances. The ability's trigger is sensitive, as Mitsuba simply questioning the presence of Akefu was enough to activate it. The range of the ability is unknown, but it appears to be extremely large, as Josuke and Mamezuku were affected despite being nowhere near Akefu's whereabouts.
As a physician in charge of an entire hospital, it can be inferred that Akefu is knowledgeable on both general medical knowledge, as well as medicinal applications of the Locacaca fruit.
As head doctor of TG University Hospital, Akefu seemingly oversees research on the Locacaca fruits and gives orders to fellow Rock Human doctors, such as Wu Tomoki, Urban Guerrilla, and Poor Tom. Due to his honorary position, he is stated to not be involved in any actual medical practice.
Akefu seems to have some kind of relation with Mamezuku's father, as he attended his funeral. Furthermore, Satoru is implied to have been responsible for the calamities that affect the Mamezuku family.
Akefu along with his colleague Wu Tomoki attempt to meet with Poor Tom to retrieve the grafted Locacaca branch. They disguise as ambulance drivers and arrive at the Higashikata orchard. However, they are tricked by Jobin and Tsurugi Higashikata into getting an ordinary pear branch from Poor Tom instead. They realize it was someone else other than Josuke and Poor Tom who lit the orchard on fire and that the other party now has the real Locacaca branch.
Akefu is pursued by Josuke Higashikata, Yasuho Hirose, and Rai Mamezuku. Completely ignoring them, Akefu sends his ability after the three and makes his getaway on a bus. He's later spotted by Mitsuba Higashikata at both her son's elementary school and on the property surrounding the Higashikata House.
Josuke and Mamezuku discover that Akefu is scheduled to give a lecture on regenerative medicine. Deciding to pursue him to that lecture causes Akefu's Stand to activate and attack them just as the rain begins to fall. Cornered by the rain and the police, Josuke decides to let the raindrops shoot through him and be brought to the hospital. Meanwhile, Akefu keeps stalking the Higashikata Family and his ability causes disaster after disaster for them, with Tsurugi's illness triggering at the same time.
On the day of the lecture, Akefu unveils his product, the Locacaca 6251, to the public. He presents his new medicine and its processes. Meanwhile, Josuke is again attacked by Akefu's ability and eventually revises his plans.
On the day of the harvest, Akefu is again seen by Mitsuba and Yasuho lurking near the Higashikata House but also by Rai Mamezuku just outside of the police station. At the Higashikata House, his ability causes a string of events that leads to the new Locacaca being exposed. As Jobin argues with Norisuke and eventually takes him out, Akefu finally takes action. He enters the Higashikata House and approaches the family. Mitsuba sees him passing by the door frame of the corridor outside of Tsurugi's room, pass through a computer screen, the glass panels of the bookcases, passing through the bathroom, the window near the bed, a frame, and then slipping under the bedsheets. Jobin, warned of his presence by Mitsuba, summons his Stand Speed King and attacks him. Soon enough, Akefu's ability causes another calamity and Jobin is drained of his blood, his potted Locacaca rolling towards the door to the garage.
At the TG University Hospital, Akefu is scheduled to meet with a reporter from the science journal "Pangea Land", Taoka. However, Taoka shows Akefu footage of Holy Joestar-Kira, the secret Locacaca laboratory, and a sample of the fruit inside of a jar. Taoka accuses Akefu of conducting illegal human trials and is ready to pursue him. Akefu thus raises the possibility of the sample being a fake and theorizes that Taoka must have touched the fruit, and that some juice may have slid into a small cut on his hand. Akefu leaves Taoka, trusting his ability to kill the reporter for him, and goes towards Josuke. When he arrives at the laboratory, Akefu senses that something is amiss and doesn't step into the room. Instead, he deploys a Rock Insect named Dododo De Dadada and sics it on Josuke and Rai Mamezuku.
Akefu lets Dododo De Dadada attack Josuke, but Rai Mamezuku eventually intervenes and kills the Rock Insect. Rai approaches Akefu and confronts him, waving his sharp fingertips two centimeters away from Akefu's face, and with seemingly no calamity in sight to stop him. As he approaches the tip of his wire into Wonder of U's face, Mamezuku begins to claim that the Stand's power of calamity could be a trick. Akefu openly wonders what could happen as nobody has ever gotten this close to him but declares that still, nobody can attack him. Then, Akefu presses on Mamezuku's past, reminding him of the time his father died, how a mysterious insect laid waste to the Mamezuku family's orchard, and how Mamezuku's mother fell ill and died as she was overwhelmed with all the calamities that had happened. Angered by the taunt, Mamezuku directly grabs Akefu by the neck and threatens to impale it with his fingertip.
Suddenly, one of Mamezuku's braids flies off. Mamezuku narrowly missed Satoru Akefu's neck and spherical chunks of flesh have been taken off his shoulder. Josuke sees that his own soap bubbles were responsible for wounding Mamezuku. The head doctor thus realizes that this was Josuke's trap: Josuke had laid several bubbles in the room but some of them were hidden and spinning at high speed. By letting Akefu come to him, Josuke had hoped to let these trapped bubbles kill the enemy Stand but instead, by sheer unluck, these bubbles wounded Mamezuku instead. Worse, one of those bubbles just pierced through Mamezuku's head.
As Mamezuku collapses, Wonder of U's confidence in its invincibility is reassured. However, Mamezuku is not dead yet and reveals the power of the Spin to Josuke.
- The covers of Ultra Jump 2020 Issue #5, JJL Volume 23 and JJL Chapter 96 all feature imagery of multiple instances of Satoru Akefu levitating in the sky, bearing resemblance to the work Golconda of Belgian artist René Magritte.