Akira Otoishi (音石 明, Otoishi Akira) was confirmed to return for All-Star Battle R during the game's initial announcement trailer.[1]
His moveset is fundamentally the same as his from All-Star Battle, with a few tweaks being made to both balance the character and fit him into the overall gameplay tweaks that All-Star Battle R brought.
Being Akira's one and only voice actor, debuting in All-Star Battle and later voicing Akira in the Diamond is Unbreakable anime adaptation, Showtaro Morikubo reprises his role in this game as well. As with majority of the game's roster, voicelines for Akira were either added or re-recorded.
Akira has 950 health and uses the Stand (スタンド, Sutando) Battle Style, fighting foes with Red Hot Chili Pepper. During a fight, he can use various moves from his appearance in Diamond is Unbreakable.
Otoishi briefly summons Red Hot Chili Pepper to move forward and deliver a two hitting uppercut. If Otoishi has MAX Electricity, this attack will do more damage and knock the opponent into the air with the second hit.
Otoishi briefly summons RHCP, whose upper half appears from the ground and jabs straight out. If Otoishi has MAX Electricity, this attack will do more damage.
Oroishi briefly summons RHCP, whose upper half appears out of the ground and performs a sweeping chop. If it hits, the opponent will be knocked to the ground in a hard knockdown. If Otoishi has MAX Electricity, this attack will do more damage.
Otoishi performs an aerial kick straight out. If it hits the opponent, they'll be launched away.
Attack type: Middle Damage: 30
Normals [Stand On] (通常技)
Standing Light Attack
ON GROUND
RHCP jabs outwards. If Otoishi has MAX Electricity, this attack will do more damage, but the start up will be longer.
Attack type: High Damage: 12 (normal) / 15 (MAX Electricity)
Standing Medium Attack
ON GROUND
Otoishi and RHCP move forward while RHCP delivers a two quick hooks. If Otoishi has MAX Electricity, this attack will do more damage, but the startup will be longer.
RHCP moves forward and performs a sweeping chop, knocking the opponent to the ground in a hard knockdown if hit. If Otoishi has MAX Electricity, this attack will do more damage.
Neither Otoishi nor RHCP move as far forward as they did in All-Star Battle during this attack, resulting in this attack having reduced range. However, when Otoishi has MAX Electricity, the second hit of the uppercut will now launch opponents into the air.
Jumping Heavy Attack
IN AIR OK
The angle opponents are launched has been altered, leading to the opponent being launched slightly higher into the air, and therefore not as far. While it isn't too visually noticeable, the change now allows Otoishi to combo off of a successful hit now.
Style/Specials/Etc. [Stand Off] (スタイル/特殊技/その他)
Charge
+ ON GROUND CHARGEABLE
This move charges Otoishi's Electricity Gauge significantly faster than it did in All-Star Battle.
Right Hand Rockout
+ ON GROUND
The input for this move has changed. Previously it was in place of .
Electricity Gauge
Passive
The translation of the name of this passive has changed slightly. Previously it was "Power Gauge" instead of "Electricity Gauge".
Normals [Stand On] (通常技)
Jumping Medium Attack
IN AIR OK
This normal now launches opponents in hit rather than only causing basic hitstun.
Style/Specials/Etc. [Stand Off] (スタイル/特殊技/その他)
Charge
+ ON GROUND CHARGEABLE
This move charges Otoishi's Electricity Gauge significantly faster than it did in All-Star Battle. Additionally, this special can now be used in Stand Mode instead of being a User Mode exclusive move.
Electricity Gauge
Passive
The translation of the name of this passive has changed slightly. Previously it was "Power Gauge" instead of "Electricity Gauge".
General Changes
Otoishi's run speed in User Mode has been decreased.
Medal List
Costumes & Tints
Costumes
Normal
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The player's Heart Heat Gauge continuously refills. The player's defense is decreased.
Secret Missions
1. Use the "Right hand rockout" special: 1000 G 2. Land the "I'll drag you in!" skill: Akira Reference Sketch 3. Use a Great Heat Attack: Akira Color Tint C
Entrance Dialogue
Akira: You wanna sponsor the one and only Ultra Super Guitarist? Speedwagon: Me, a sponsor? What in the world do you mean?
Victory Dialogue
Akira: Don't give me that! You're with that Foundation Jotaro Kujo mentioned!
Defeat Dialogue
Speedwagon: Speedwagon Foundation?! I suppose I would like to make a name for myself someday...
Each round lasts only 30 seconds. The player's Heart Heat Gauge continuously refills.
Secret Missions
1. Use the "Charge" special: 1000 G 2. Land the "Time to get electric, baby!" throw: Red Hot Chili Pepper Publicity Artwork 3. Land a Great Heat Attack: Red Hot Chili Pepper 3D Model
Entrance Dialogue
Okuyasu: I'm ready to take you on! You're gonna be wiped right out of this world! Akira: You think you've cornered me?
Victory Dialogue
Akira: You're lacking in spirit... You can't get revenge if you can't outclass your brother!
Akira's theme is Ultra Super Guitarist (ウルトラ・スーパー・ギタリスト, Urutora Sūpā Gitarisuto), and can be unlocked in-game by buying it from the Gallery Shop for 1000 G.
Akira's Theme
Its name is taken from Akira's stated life dream in Chapter 46 of Diamond is Unbreakable. Specifically, he says "My dream is to be like Jimi Hendrix or Jeff Beck. To be an ultra super guitarist and live life hard and fast!"
Stand: Chili Pepper. A budding young rock guitarist. He steals the "Bow and Arrow" and half-heartedly starts experimenting with Stands. He's retired after losing to Josuke Higashikata 4 and Okuyasu, ending up in jail for theft.
The Stand of Akira Otoishi. It has the ability to manipulate electricity, and can travel at high speed through power outlets and along wires. As a long-distance operation type Stand, it becomes more and more powerful as it absorbs electricity.
Akira Otoishi's Stand that can manipulate electricity and travel at high speed through outlets and along power lines. It is a remote Stand that becomes more and more powerful as it absorbs charge.
Fixed bug where a Standing Light Attack would be performed instead when inputting this attack.
"Kiss this!" skill
No longer counter hits on a successful activation.
Reduced startup of the attack on a successful activation.
"Assault Assist"
Changed internal processing to correct an occurrence where the player was not gaining Heart Heat when Akira was called while Heart Heat was being used over time.
1.4.0
"Reversal Assist"
Fixed animation so only Red Hot Chili Pepper attacks the opponent.
1.4.1
"Reversal Assist"
Increased number of stocks from one to two.
1.5.0
Standing Heavy Attack [Stand Off]
Changed to two hit attack.
Attack now launches when landed with MAX Electricity.
Standing Medium Attack [Stand On]
Increased move distance.
"Gonna knock your ass out!" skill
Increased start up speed.
Increased speed of Stand animation near end of move.
Adjusted Stand Rush timing due to increased animation speed.
"I'll drag you in!" skill
Increased start up speed.
"Kiss this!" skill
Made Red Hot Chili Pepper move forward towards the opponent when successfully activated.
Changed to four hit attack when Electricity Gauge is full.
Made flash cancel available when Electricity Gauge is full.
Altered the animation when successfully activated and Electricity Gauge is full.
Added cammera effect when successfully activated and Electricity Gauge is full.
1.6.0
"Spitfire!" skill
Fixed issue where Akira's collision detection would disappear.
2.0.0
Standing Heavy Attack [Stand Off]
Enabled the ability to cancel on the first hit.
Adjusted the upward launching force of the second hit when Electricity Gauge is full.
Fixed a bug where Red Hot Chili Pepper would attack upward if this attack was used immediately after Stylish Guarding an aerial attack.
"Wack-A-Mole Champion" skill
This skill will no longer activate counters.
"Kiss this!" skill
Changed cancel properties.
Not MAX electricity: Enabled ability to Flash Cancel.
MAX electricity: Enabled ability to Jump Cancel.
Fixed an issue where the final hit would sometimes not connect against characters with a horizontally narrow hurtbox.
ON GROUND 
ON GROUND 
ON GROUND 
+ 
ON GROUND CHARGEABLE 
+ 
ON GROUND 
Taunt Lines
1000 G
Reference Sketch
Buffs
Nerfs
Neutral
Normal Costume
Akira Color Tint C
Red Hot Chili Pepper 3D Model
Ultra Super Guitarist (ウルトラ・スーパー・ギタリスト, Urutora Sūpā Gitarisuto), and can be unlocked in-game by buying it from the Gallery Shop for 
Land the "I'll drag you in!" skill
