Her moveset is similar to that of her Eyes of Heaven appearance, with modifications and new aspects added to better fit her in with All-Star Battle R's different style of gameplay.
Having voiced Mariah in the Stardust Crusaders anime adaptation, Ayahi Takagaki continues to reprise her role in this game. Like with the majority of the roster that have returning voice actors from Eyes of Heaven, voicelines for Mariah were added and re-recorded.
Mariah has 900 health and uses the Stand (スタンド, Sutando) Battle Style, fighting foes with the assistance of Bastet. During a fight, she uses moves that are loosely based on those featured in Stardust Crusaders.
Exclusive to Mariah is a two-meter gauge that affects the damage, Guard damage, and properties of various skills, as well as her HHA. It is filled when Mariah lands "If you're not allowed to touch something, it makes you want to touch it more..." or as long as the opponent is within range of her magnetic aura. However, it will slowly deplete on its own once the opponent is outside of Mariah's magnetic aura, and will also immediately be reset to Lv 1 if Mariah is struck by a GHA.
The Magnetization Gauge begins at "Lv 1", and eventually progresses to "Lv 2", then "Lv MAX". At Lv MAX, the gauge will not begin depleting for a few seconds even if the opponent moves outside of Mariah's magnetic aura.
If you're not allowed to touch something, it makes you want to touch it more...
ON GROUND WHEN DOWNED
With a snap of her fingers, Mariah briefly summons Bastet on the ground a set distance in front of her. If the opponent touches it, regardless if they block it or not, they'll become Magnetized and begin the Magnetization process. Bastet can strike a downed opponent, allowing for easy magnetization after knocking them down.
If the opponent is already Magnetized when they touch Bastet again, the Magnetization Gauge will increase by half of a level, or a quarter of the whole gauge.
The magnetic force will just keep on increasing...
Automatic while the opponent is Magnetized
While the opponent is Magnetized, Bastet's magnetic aura becomes visible around Mariah, visually represented as purple ripples emanating outwards from her feet.
While the opponent remains within the zone of aura, the Magnetization Gauge will gradually build on its own. However, if the Magnetic Gauge empties, this ability will cancel.
Skills (コマンド技)
Sorry, but you'll have to die now.
+ // ON GROUND IN AIR OK
Mariah throws three knives forward as homing projectiles, traveling across the entirety of the battle arena without expiring. The attack button inputted affects the homing power and damage of the knives while inversely affecting their flight speed. If performed in mid-air, Mariah will throw the knives at a downwards angle. (Flash Cancel comboable)
The damage of this skill increases with each level of the opponent's Magnetization.
The electricity will char you to a crisp!
+ // ON GROUND TRAP
Mariah throws a projectile knife upwards, severing a power line that then hangs onto the battlefield as a live wire. The knife can also strike the opponent themselves if they're close to or above Mariah while still severing the power line, functioning as an anti-air attack that knocks them back (Flash Cancel comboable). The attack button inputted determines the trajectory that she throws the knife and affects where the cut power line appears:
Light (): Mariah throws the knife directly upwards; The power line appears behind her.
Medium () & Heavy (): Mariah throws the knife at an upwards angle; The power line appears a set distance in front of her.
The power line will last for a set period before disappearing on its own. While it hangs, the electrified end will automatically be drawn towards the opponent if they're within range, shocking them before disappearing. This skill cannot be used again until the power line disappears. (Comboable)
The number of hits delivered by the power line as well as its homing power increases with each level of the opponent's Magnetization.
Heh heh heh... Enjoy...
+ // ON GROUND
Mariah lets loose one of the metallic wires on her skirt, causing it to fly forward as a high-speed projectile. This is a low attack that cannot be blocked standing, and if it connects, the wire wraps around the opponent, binding them and leaving them vulnerable to attack for a short period. (Comboable)
The duration that the opponent is bound by the wire increases with each level of Magnetization.
You can't follow me anymore.
+ // ON GROUND WHEN DOWNED
Mariah points forward, causing several metallic objects to incidentally fly in from above the screen, aimed at the opponent. The objects function as delayed anti-air projectiles, and can strike a downed opponent. The effect of this skill is determined by the attack button inputted:
Light (): The objects fly in almost immediately. (Comboable)
Medium (): The objects fly in after a few seconds. (Comboable)
Heavy (): The skill instead becomes a feint, with Mariah pointing but with no projectiles actually appearing, allowing her to act instantly.
The objects summoned by this skill are altered with each level of the opponent's Magnetization.
Lv 1: Several cans are summoned, hitting the opponent multiple times.
Lv 2: A bike is summoned, staggering the opponent for moderate damage.
Lv MAX: A dense clump of different objects is summoned, striking the opponent in a single, heavy explosion that launches them into the air.
Throw (投げ技)
You were one fine specimen.
2 ATK buttons at close range or ON GROUND
Mariah pushes the opponent onto Bastet placed on the ground. As they're stunned by the ensuing electric shock, a barrel flies in and knocks them away.
Despite being an attack involving Bastet and magnetizing the opponent, this does not actually raise the Magnetization Gauge.
Heart Heat Attack / Great Heat Attack (HHA / GHA)
What are you drooling over?
+ 2 ATK Buttons ON GROUND
Mariah's bust seemingly expands as she cheekily asks the opponent what they're imagining. Suddenly, nuts and bolts stored in her top fly out as high speed projectiles and rapidly pelt the opponent for an extended period not unlike a machine gun, the wild spray of projectiles covering a very large range in front of her.
The damage dealt by this HHA increases with each level of the opponent's Magnetization.
You little turds!
+ 3 ATK Buttons, or ON GROUND
Furious, Mariah makes her infamous twisted expression while screaming profanities, and summons Bastet under the opponent, homing in on their location regardless of range or orientation. If the opponent is caught, they're paralyzed by Bastet delivering a potent electromagnetic shock as Mariah throws a knife upwards to sever an electrical line, causing the two live wires to be attracted to and electrocute them. She follows up by firing nuts and bolts from her shirt at them which are soon assisted by increasingly larger objects such as trash cans and bicycles. With the magnetism reaching maximum power, two cars fly in from opposite sides of the opponent and crash into them, before violently exploding as Mariah faces away and guffaws. Throughout the attack, Mariah comments at how her magnetism only gets worse and worse until her target is slowly crushed.
Upon connecting, this GHA immediately sets the Magnetization Gauge to Lv MAX afterward.
The opponent's Heart Heat Gauge continuously refills.
Secret Missions
1. Down your opponent: 1000 G 2. Reach Level 3 with "Magnetization Gauge" style: Scary Monsters 3D Model 3. Land a Heart Heat Attack: Mariah Color Tint C
Entrance Dialogue
Diego: Sniff sniff... Your whole body smells like metal. You're not a lady who weighs less than 51 kg. Mariah: Lord DIO? No, you're an impostor. You don't have any of his charisma.
Victory Dialogue
Mariah: O-hoh-hoh-hoh-hoh-hoh-hoh... Lord DIO, I won... I've eliminated this impostor who dared imitate you...
Mariah's Magnetization Gauge is always full. The player's Assist attack power is increased.
Secret Missions
1. Call an Assist: 1000 G 2. Land the "Hermit Purple!" skill: Old Joseph (Hermit Purple) 3D Model 3. Make contact with Bastet: Mariah's Theme
Entrance Dialogue
Mariah: If you're not allowed to touch something, it makes you want to touch it more... Heh heh heh. Enjoy, Joseph Joestar. Old Joseph: She was cunning. She might have laid a trap...
Victory Dialogue
Old Joseph: I could really go for a bite to eat...
Defeat Dialogue
Mariah: Before you go, let me just say, you were one fine specimen. For a few minutes, anyway.
An antagonist from Part 3: Stardust Crusaders, she is User of the StandBastet. She magnetizes Joseph and Avdol, easily overpowering them. However, she is retired from the fight when, in the end, their car - and bicycle - covered bodies magnetize to each other and she is crushed between them.[3]
Mariah's Stand. It appears as an electrical outlet. It can even be placed on non-conducing objects such as rocks. The body of anyone who touches it is magnetized, with the force increasing until it attracts objects as heavy as cars.