Eyes of Heaven/Noriaki Kakyoin

Kakyoin was one of the first confirmed characters for the game (alongside Part 2 Joseph, Caesar, Stroheim, Jotaro, Josuke and Diego).

As a Stand user, Kakyoin is one of many characters with wildly varied abilities that grant him uniqueness in battle. Since most of the game's animation and attacks were re-used from All-Star Battle, Kakyoin's moveset remains the mostly the same: A distanced character who utilizes many long-ranged attacks and can set traps with Hierophant Green's Barrier.

A unique characteristic of Kakyoin is that he is one of the only two characters in the game whose Normal Attacks consists entirely of projectiles, the other being Johnny Joestar, enforcing his projectile-focused playstyle. With Kakyoin, he can string together minor Emerald Splashes with finite range, both on the ground and in mid-air.

Moveset

 * Style Action - Hierophant's Barrier!: Hierophant Green extends its arm and deploys a thinly visible net of tentacles as traps. If the initiating button is held, the attack's range can be extended indefinitely. A maximum of three can be out at any time, with a Barrier Icon displaying how many Kakyoin can place, and placing any more than the max will simply undo the oldest barrier. All deployed tentacles are undone if they are used, or if Kakyoin is knocked down, even by soft knockdown that he techs. If an opponent or opponents touch any barrier, the barriers will explode into unblockable emeralds that knock them back. If at least two barriers are deployed when one is tripped, the opponent is instead sent flying straight into the nearest one, provided that there is a direct path between the two. This can potentially send opponents flying long distances across the stage if set up properly. The barriers also have special properties in response to Kakyoin's other skills.
 * Didn't you notice?: Hierophant Green deploys a thick cluster of tentacles as temporary traps. Opponents that trip the trap are paralyzed, bound by the tentacles and open to further attacks. Any of Hierophant's Barriers that are deployed will also transform into the cluster traps.
 * Eat this!: Hierophant Green fires a larger Emerald Splash with infinite range and some homing capability. Any of Hierophant's Barriers that are deployed will also unleash emeralds, which will aim at Kakyoin's target if he is locked on, otherwise scattering in all directions.
 * Noriaki Kakyoin contemplates Hierophant Green!: Kakyoin grabs hold of Hierophant Green as the Stand extends a tentacle at specific points in the stage to pull him to, represented by anchor icons. This allows for quick escapes and inversely can be used to close the distance on an opponent. Certain types of environmental objects, such as lampposts, allow Kakyoin to stand atop them, granting him the ability to recuperate or attack from out of reach of close-ranged attacks. Kakyoin may also lock onto any of Hierophant's Barriers to use as anchors, and doing so will consume the selected barrier.
 * When it rips things apart, it writhes—with euphoria!: Hierophant Green sends tentacles into the ground, appearing at an opponent's feet to skewer them and send them flying with multiple hits. If the initiating button is held, the attack will continue in intervals until it succeeds at the expense of stamina. The attack will target whatever Kakyoin is locked onto, otherwise attacking the nearest opponent.
 * EX - When it rips things apart, it writhes—with euphoria!: Kakyoin is invincible upon activation and recovers from the skill faster.
 * EX - Eat this!: Kakyoin is invincible upon activation.

JoJolities

 * When it rips things apart, it writhes—with euphoria!: Kakyoin must connect "When it rips things apart, it writhes—with euphoria!" 3 times. (200 Points)
 * I know I am.: Kakyoin must use "Noriaki Kakyoin contemplates Hierophant Green!" 3 times. (200 Points)
 * You won't be able to hide a single movement from me now!: Kakyoin must send an opponent flying into all three of Hierophant's Barriers in a single chain. (300 Points)
 * I don't like this either!: Kakyoin must survive the first 15 counts of the battle timer without taking damage. (500 Points)
 * Noriaki Kakyoin doesn't fall for mind games!: Kakyoin must survive the first 30 counts of the battle timer without taking damage. (800 Points)

Dual Heat Attacks

 * Solo - 20m Radius Emerald Splash: The GHA uses a different, "upgraded" animation compared to All-Star Battle: The target bounces around the barrier at extremely fast intervals, and the attack ends with Kakyoin turning around (having faced his back to the opponent) and summoning a massive Emerald Splash volley from behind him directly towards them (rather than Hierophant Green firing at point-blank range).
 * With Jotaro - Use the edge of the ring—just like sumo.: Kakyoin holds the opponent in place with Hierophant Green, allowing Jotaro and Star Platinum to pull them in by Hierophant Green's tail and unleash a barrage of punches that sends them flying. Kakyoin appears once more behind the enemy mid-air to deliver an Emerald Splash. Throughout the whole attack, Jotaro and Kakyoin converse about Sumo, referencing the events in the Wheel of Fortune chapters.

In the game's first demo, Kakyoin is Jotaro's default partner, with the latter being the only player-controlled fighter in the first demo.

Jotaro and Kakyoin are the only two characters who have appeared in both demos. Kakyoin is the only returning character in the game whose appearance in the anime has not affected his general color scheme coming from All-Star Battle, due to the anime using a very similar color scheme.

Storyline
In the game's parallel continuity, Kakyoin, along with Avdol and Iggy, is resurrected from death under mysterious circumstances. Introduced along with the crusader's own revived enemy, N'Doul, he attacks Jotaro, Joseph and Polnareff on the rooftops of Cairo. After being defeated, Kakyoin's alignment is restored by a time-traveling Robert E. O. Speedwagon through use of the Saint's Corpse. Upon awakening, Kakyoin warns the group of DIO's weakness despite Jotaro having already defeated the vampire. Once he and the group learn of Speedwagon's origins, and the recent phenomenon caused by the corpses' appearance through the time and space, they decide to help Speedwagon to retrieve the corpse parts and recruit allies from various timelines.

At the end of Part 4's chapter, Kakyoin and the group meet up to discuss the true culprit behind the phenomenon. They are shocked to learn that it was DIO, deeming impossible for him to be revived and masterminding this event.

Because of the new reality introduced by the game, Kakyoin and his injured allies survive the fight against the godly foe and live on, though hospitalized for a while.

Tournament
He is paired with Pannacotta Fugo in the Eyes of Heaven Tournament, but was eliminated in the preliminaries by Pet Shop and Kars.

In the semifinals, Kakyoin returns to the tournament, paired with Jotaro. However, they are eliminated by Kars and Pet Shop in the first round.