In disguise as a Speedwagon Foundation agent
Akira's cameo in Thus Spoke Rohan Kishibe alongside Tamami Kobayashi
Akira Otoishi (音石 明, Otoishi Akira) is an antagonist in Diamond Is Unbreakable; featuring centrally in the arc Red Hot Chili Pepper.
Akira steals the Arrow from Keicho; continuing a selfish terror on Morioh and the allies until they battle at the town's docks.
Akira is a 19-year-old man with long, wavy hair. A lightning-bolt-shaped scar crosses the left of his face vertically, from his forehead over his left eye to his jaw.
He wears a dark jacket, whichs right sleeve has words "AC" and left "DC" on them, with a vest, tight pants, and boots. He also frequently wears an electric guitar resembling the Fender Telecaster.
Akira is highly self-centered. He is dedicated to his craft as a musician; wishing also for recognition or fame as a Rock star. After he is released from prison, he continues to pursue this goal.
Akira was one of the many people Keicho Nijimura shot with the Bow and Arrow while trying to find a Stand user capable of killing his mutated father. Akira was one of the many lucky ones to develop a Stand, after which he became interested in Stands and their creation.
To further this goal, he forcefully took the Bow and Arrow from Keicho, leading to Keicho's death.
From there on, he watched and tormented several people, among them Josuke Higashikata, while trying to improve in the use of his guitar skills.
Akira phones Jotaro at his hotel, warning him to leave Morioh, adding that he killed Keicho, he has the Bow and Arrow, and that he won't bother them if they don't bother him, just before he destroys the phone.
The theft of the Bow and Arrow causes Jotaro Kujo to mark him as a threat and search for a way to find the location of his person, as his Stand allows him to interact with others from a distance via electricity.
Akira sends his Stand through Josuke's TV, fighting him in order to test his strength in preparation for the event of a confrontation with Jotaro.
To help discover Akira's wherabouts, Jotaro calls on Joseph Joestar in order to again make use of his Stand, Hermit Purple. Immediately, Akira discovered their plans, which led to a short skirmish with Okuyasu Nijimura, in which he discovered that Red Hot Chili Pepper had a time limit, as when not reserving enough electricity, it grows weaker. Using this to his advantage, Okuyasu savagely beat the Stand before he accidentally opened a hole within the floor which led to a power line, which Akira used to reabsorb enough energy to defeat Okuyasu.
During their next confrontation, Akira personally showed up to kill Joseph. He believed Josuke to be an easy match, underestimating the youth, which lead him to his defeat.
Even after this Akira used his last power to teleport himself to the boat that Joseph was on, disguising himself as a Speedwagon Foundation operator. Okuyasu, acting as the bodyguard for Joseph, saw this and prepared to attack him, but Akira confused him by saying the other SPW Foundation operator was the real Akira. Okuyasu, not used to brainwork, decided to hit both and luckily struck Akira first.
He was later put on trial with a sentence of three years behind bars with no bail or parole for the things he had stolen. It was there that Jotaro confronted him, saying that if he tried to escape, he and Josuke would hunt him down to the ends of the earth.
He reveals to them that he shot the rat Bug-Eaten, but hides the fact that he actually shot two rats (Bug-Eaten and an unnamed rat).
Akira, newly released from prison, asks for Rohan's autograph along with Tamami Kobayashi, claiming to be a big fan of his. Both are harshly rebuked by Rohan's editor Minoru Kagamari, who tells them that Rohan is busy at the moment, but Rohan, in turn, scolds his editor for treating him like a "slow mangaka who can't sign autographs" before signing autographs for the two of them with coffee using a special dripping technique.
Akira is featured as a playable character in All-Star Battle. In the Morioh City stage, when the stage hazard activates and puddles around the area are shocked, his exclusive electricity gauge is replenished to max if he is hit.
Akira was confirmed for the game along with Yoshikage Kira.
In this game, he instead is an ally character, similar to his current status in canon spin-off of Rohan Kishibe series, as seen on the brainwashed black aura by Heaven Ascension DIO on him.
He is partnered with a revived Shigekiyo Yangu, until they are defeated and saved from DIO's control by Jotaro with a Saint Corpse Part during the second encounter. Once recovered from the brainwashed state, Okuyasu asks a surprised Otoishi how it feels to be one of good guys now, while Otoishi is still frightened of Okuyasu's presence, thinking he wanted to get revenge for murdering his brother Keicho. However, he was relieved to have conversation changed to seeing Shigechi well again, but Otoishi is interrupted by the presence of the brainwashed Weather Report (who also died and was revived like Shigechi and most of the deceased allies), who was later defeated by Jolyne and Anasui, and saved, like Akira by Jotaro, using the corpse part.
As DIO (in his Heaven Ascension form) sends the Joestars (except for Jolyne and Jotaro who fight DIO in Cairo) into his traps, such as creating an illusion of their brainwashed allies several times until succumbing to the control of the dark aura into giving the corpse to DIO. The Joestars and their allies' souls are absorbed into DIO to increase his power tenfold to kill Jotaro and Jolene. Among the souls absorbed are Otoishi and his newfound allies.
Otoishi's current status in a new timeline remains unknown, as he may be a reformed criminal, or may have reverted to his past ways.
Tournament
He is paired with Enrico Pucci in the Eyes of Heaven tournament, but was eliminated in the preliminaries by Weather Report and "Kosaku Kawajiri".
In disguise as a Speedwagon Foundation agent
Akira's cameo in Thus Spoke Rohan Kishibe alongside Tamami Kobayashi
Render for Akira in All-Star Battle
Akira Otoishi and Red Hot Chili Pepper in All-Star Battle
Akira's "Speedwagon Foundation Costume" in All-Star Battle
All-Star Battle concept art
Akira in Eyes of Heaven