All-Star Battle/Johnny Joestar

Johnny makes his first playable appearance in the PS3 game. He was confirmed alongside Jonathan Joestar and Will Anthonio Zeppeli. As a Part 7 character, three parts of the Holy Corpse appear scattered on stages when he, Gyro, and/or Valentine are being played, which they can pick up to receive blessings that boost their performance in combat. Corpse Parts are obtained by crouching while over them.

Along with Gyro, Johnny is one of the only two characters in the game who uses the "Mounted" Style. This Style allows him to get on and off his horse, Slow Dancer, slightly changing the moves available to him. Johnny must be unmounted in order to pick up the Corpse Parts but is slowed to a sluggish crawl due to his paraplegia. Exclusive to Johnny is a "Tusk's Growth" icon that appears above the Heart Heat Gauge, which displays Tusk's current ACT. Johnny has 950 HP.

Command List
Along with Enrico Pucci, Kosaku-Kira, Hol Horse, Koichi Hirose and Giorno Giovanna, Johnny is a character who can utilize more than one Stand during a match as part of his move set, being the character with the most Stand forms: All four Tusk ACTs.

ACT1
Johnny begins a match with ACT1. Most of his moves consists of him shooting off his nails as basic projectiles. Unlike Tusk's later ACTs, all moves related to ACT1 are lost upon Tusk evolving.

ACT2
Once Johnny reaches ACT2, a Tusk Icon will appear above the Heart Heat Gauge, showing the amount of Golden Spin nail bullets he has left from 10. One of the nail icons will darken every time Johnny fires one off, and they will only regenerate after all ten have been spent.

ACT3
Once Johnny reaches ACT3, he unlocks two more abilities that involve transportation via the holes created by Golden Spin Nail Bullets, aiding him in unmounted mobility.

ACT4
Once Johnny reaches ACT4, he unlocks two more abilities that involve Tusk ACT4 directly attacking the opponent with a barrage of fists, granting him more raw power and improving his ability to engage in close-ranged combat.

Gameplay Overview
Johnny is capable of battling at range using his variety of nail bullet-related skills to attack the opponent from various distances, trading some speed for power for his individual projectiles and other ranged attacks. When mounted, he gains above-average maneuverability and sizeable normal attacks, as well as a great combo tool in "I can make it!", which coupled with his projectiles make it especially difficult for his opponent to get him into their effective range. The Holy Corpse Parts also offer Johnny boons that naturally enhance his playstyle, the most prominent of which is super armor when utilizing his nail bullets.

However, due to having to manage his nail bullets past ACT1, the need to continuously evolve Tusk to gain access to more of his moveset, and his severe vulnerability unmounted, Johnny is very technical and possesses a dramatically steep learning curve, seen as one of the most difficult characters to grasp. Particularly, being unmounted leaves Johnny a mostly immobile target with short-ranged melee attacks, meaning he is easily overwhelmed if the opponent does not give him the opportunity to return to Slow Dancer's saddle and remain there. Running out of Golden Spin nail bullets also induces a heavy loss of a large majority of his moveset for the time being, thus aggressive overuse of Johnny's special skills can make him even more vulnerable.

While Johnny begins the match rather subpar, steady evolution of Tusk gathers him more and more abilities until he becomes a force capable of performing well and dealing great damage at any range, even up close. Careful application of his resources and maintaining superior mobility, range, and power with Slow Dancer, Tusk at ACT4, and the Holy Corpse Parts makes Johnny an extraordinarily tricky and formidable combatant.

Miscellaneous
If Johnny is hit with "Kosaku Kawajiri's" Bites the Dust GHA while Tusk is at ACT2 or beyond, it will revert back to ACT1.

Usually when falling victim to certain GHA moves or other finishers, Johnny is still kneeling/crawling. However, when struck by Part 4 Josuke's GHA, Johnny is briefly seen standing (Either a result of a different animation for Johnny having not been programmed or Crazy Diamond actually healing his spine and legs) before Josuke pummels him back into paraplegia.

Aside from Gyro and Valentine, Johnny has special dialogue with himself, as both Johnny's believe the other is a parallel version of himself made by Valentine.