Name: Scar Gensui[減衰]
(Translation: Decay)

Former name: Y/n Santos

Age: 15

Gender: Male

Alignment: Chaotic Evil.

Looks:

*He is a nekomata, but with one cat ear damaged*

Miraculous Form:

Alias: Claw Noir

Animality Form:

Inverse Dark Form:

*Without the other Miraculous*

Personality: Deranged, sadistic, bloodthirsty.

Likes: Causing as much destruction as he can, creating mayhem, killing when bored, forcing people to do work for him, Abusing his Marinette.

Dislikes: Y/n(his alternate counterpart), Betterfly, Shadybug talking back, being told off, having people question his authority, losing, not getting what he wants.

List of Charges committed by this SOB:
War crimes(Destroyed major cities across the globe)
Mass murder(including child murder)
Brainwashing(The Supreme upgrades the Ladybug Miraculous to influence Shadybug to Follow his orders. Resisting will lead to her getting a small Cataclysm on her)
Mass property damage
Terrorism
Arson
Abuse of power
Mutilation
Theft
Cannibalism(in his werecat form..he getsva craving for human flesh)
Kidnapping
Mass enslavement
Usurpation
Slavery
Mass genocide
High Treason
Torture
Psychological abuse
Stalking
Conspiracy
Sabotage
Malefic

Type of Villain: Sadistic Warlord.

Kwami: Plagg.

Personality: Sadistic as Y/n, causing destruction, killing weak people.

Likes: Scar, Camembert, watching people Decay in front of him. Mocking Shadybug for her pathetic outcome.

Dislikes: Seeing his master angry, Not getting his cheese, Shadybug speaking back

Powers: Same as Y/n

Abilities: Same as Y/n.

Forms: Same as Y/n, but remains using his base.

Bio: This version of Y/n was from an alternative timeline where he was not raises by a loving couple, but by sadistic criminals. He was beaten to the core to make him onto the perfect Criminal. At age 10, he was given the Cat Miraculous by The Supreme. This Miraculous was far more destructive than the original. The Kwami, Anti-Plagg was just as cruel as Scar was, seeing this Plagg shared the same interests as his holder.

With his destructive power, Scar began his crusade of laying waste to the planet ge resided in. He already managed to destroy half of New York with the NYPD too defenseless yo do anything. It's gotten so bad to the point where the government of every country have to intervene as well. Despite the entire Military of the entire world uniting together.. even that proved too little to stop him.

The FBI, CIA, KGB and every military weaponry was no match for the Cataclysm power of Scar. However, Scar did had some trouble as well. One in particular was a superhero called BetterFly.

The Supreme then gave Scar the Miraculous of the Ladybug and told him to make Marinette Dupain-Cheng to became Shadybug.

He then entered the Bakery where she and her parents resided in and decided to enter "casually" by using his power to disintegrate a large portion of the entrance. Tom(Marinette's father) instantly rushed to attack scar, but the evil kitty dodged and used his Cataclysm on the older male, reducing him to ashes. Sabine tried to run, but she also met the same fate as her husband.

He found Marinette, scared to death of seeing him as he threw the Ladybug Miraculous and instructed her to put them on.

Marinette at first, refused to align herself with whatever the dark Claw. She was then met with vicious slap to the face, which sent her to the ground. She looks up to Claw Noir as he spoke to her:

Claw Noir: Bitch, I don't think I asked if you want to or not. Unless you Wish to join the pile of ashes that used to be your mommy and daddy..Transform.

He threatened her with decaying her into nothing unless she did what he asked. He then forced her to put on the earrings and say the transformation phrase: "Tikki, Blots On!" As she is now transformed into Shadybug(or Toxinelle in the French Dub)

Since then, the Duo began hunting down the Gabriel Agreste, since their master needs the Butterfly Miraculous back. Shadybug never felt right doing this, but she get punished by Scar by a small Cataclysm on her, giving her pain if she did not do her job.

He and Shadybug made it down to BetterFly's hideout, just as he is about to enter the Canon MLB Universe. Nino then charged at them, to buy them time. What's happens next..well, I guess you'll have to find out.

And that is it for the Alternate Y/n Bio. Hope you guys like it.