A/n: To start this whole idea of mine off, we're going to start with Y/n Ankokuboshi from my story "The Delusional Devil" and "My Hero Academia: Demonized," and put him into the world of Mortal Kombat, to see how unique these interactions would possibly be.

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Lu Kang

Interaction 1

Lu Kang: By the Elder Gods... What are you...?

Y/n: I'm the Devil that your Gods ignored for years.

Interaction 2

Lu Kang: I am sorry for what you have become, Y/n.

Y/n: If you're truly sorry, then let me kill you!

Interaction 3

Y/n: If you're a god, then why did you ignore my prayers for help?!

Lu Kang: I am sorry for my own ignorance, Y/n.

Interaction 4

Y/n: You may have restored the timelines, but you never healed the broken souls within it!

Lu Kang: If fighting me quells your rage, so be it.

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Sub-Zero

Interaction 1

Y/n: I guess my heart is as cold as your ice, Sub-Zero.

Sub-Zero: I find that hard to believe, girl!

Interaction 2

Y/n: I'll break your ice faster than you can make it!

Sub-Zero: A challenge you won't live to see through!

Interaction 3

Sub-Zero: The Lin-Kei will not submit to you!

Y/n: I don't need them to submit.

Interaction 4

Sub-Zero: Watch your tone, child!

Y/n: I won't listen to a lowly human like you.

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Scorpion

Interaction 1

Scorpion: The Shirai Ryu will destroy you!

Y/n: Then they'll be lining up to die

Interaction 2

Scorpion: Why are you looking at me like that...?

Y/n: I'm intrigued... and curious of your people.

Interaction 3

Y/n: Ninjas? They exist in this world?

Scorpion: The Shirai Ryu are not just Ninjas!

Interaction 4

Y/n: Following your father's footsteps won't save you from me.

Scorpion: I'm following him. Just his vision.

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Kitana

Interaction 1

Y/n: So you know, I've experimented on people from another world.

Kitana: Do they beg for your death as well as Outworld does?

Interaction 2

Kitana: Do you really think you can beat me?

Y/n: Not think. Know.

Interaction 3

Y/n: May you fall into the banquet of despair!

Kitana: And may you fall to your demise

Interaction 4

Kitana: You are foolish to engage in kombat alone!

Y/n: My rage makes me more than strong enough for you~

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Johnny Cage

Interaction 1

Johnny Cage: You know, you could really do well under the spotlight

Y/n: And get mocked by the masses again? *laughs* No.

Interaction 2

Y/n: An Actor? *scoffs* Please you can't fight.

Johnny Cage: Oh I'll show you what I can do.

Interaction 3

Y/n: I thought I sensed potential in you. Guess that was a lie.

Johnny Cage: Oh it's there. Just can't see it.

Interaction 4

Johnny: The Delusional Devil! *laughs* A great name for my next movie!

Y/n: Sadly you won't be around to watch it.

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Kenshi

Interaction 1

Y/n: What can a blind swordsman do against me?

Kenshi: A lot more than you think.

Interaction 2

Y/n: I can bring you family name back to the glory it once was.

Kenshi: No thanks. I'll do that my own way.

Interaction 3

Kenshi: Why are you so obsessed with my sword?

Y/n: Because it's very similar to a Sacred Gear that Aya uses.

Interaction 4

Kenshi: With my ancestors help, I will defeat you!

Y/n: And with my own two hands, I'll destroy your ancestors!

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Kung Lao

Interaction 1

Y/n: That hat...? What is made out of?

Kung Lao: A material that you don't need to know about?

Interaction 2

Y/n: Why do you trust someone who lies to you?

Kung Lao: Liu Kang doesn't lie, it's you who does!

Interaction 3

Kung Lao: Got to admit, fighting you is a nice change of pace.

Y/n: Not for me, since this is an everyday chore now

Interaction 4

Kung Lao: Slaying a monster like you will make me a legend

Y/n: That you will. If you can even remember my name

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Mileena

Interaction 1

Y/n: Tarkat... can infect even royals...?

Mileena: You seem surprised.

Interaction 2

Mileena: I won't give my throne to you!

Y/n: Then I'll just destroy Outworld's Royal Family.

Interaction 3

Y/n: Once I learn how your disease works, I will take it for Rias's sake!

Mileena: Does she beg for your death as I do?

Interaction 4

Mileena: You want Tarkat?

Y/n: If the rumors of it are true, then it'll help me in my revenge.

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Raiden

Interaction 1

Y/n: Liu Kang is hiding secrets from you Raiden.

Raiden: I-I won't believe you lies!

Interaction 2

Y/n: Embrace Darkness Raiden! It flows within you! I've seen it!!

Raiden: What nonsense are you talking about?

Interaction 3

Raiden: Do you really think you can take on Liu Kang?

Y/n: Considering I can slay a God, yes.

Interaction 4

Raiden: Even if you subjugate the world, people will oppose your will!

Y/n: Which is why I'll exterminate them and set the example.

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Rain

Interaction 1

Y/n: You're going to defeat me...? *snorts* With water...?

Rain: My water magic is not to be taken lightly

Interaction 2

Y/n: You can't drown me. I'm immortal.

Rain: I'll find your weak spot.

Interaction 3

Rain: Rain will fall upon you like-

Y/n: *yawns* We gonna fight with actual magic now?

Interaction 4

Rain: You cannot tempt with these dreams!

Y/n: But you'll fall into them either way~

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Smoke

Interaction 1

Y/n: Why not join me and take revenge on the Lin Kuei?

Smoke: Because they took me in as forgiveness

Interaction 2

Smoke: You don't even let people in anymore?

Y/n: In the end, I just get betrayed.

Interaction 3

Y/n: Smoke isn't a type of magic?

Smoke: But it does make for a good disappearing act.

Interaction 4

Smoke: What exactly are you?

Y/n: A monster, given human form.

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Li Mei

Interaction 1

Y/n: I understand the pain of betrayal.

Li Mei: Then why did you let it corrupt you?

Interaction 2

Li Mei: You think before you act.

Y/n: But don't you do the same?

Interaction 3

Y/n: Let your anger make you stronger, no weaker!

Li Mei: Bold of you to assume that I'm weaker

Interaction 4

Li Mei: Why are you letting anger consume you?

Y/n: Not anger. Revenge.

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Baraka

Interaction 1

Y/n: Why do you fight me? We could be allies~

Baraka: Your goals and mine do not intertwine!

Interaction 2

Baraka: Why are you interested in my face?

Y/n: Because I wonder... could I use Tarkat to harm Rias...?

Interaction 3

Y/n: Join me and I might be able to cure you.

Baraka: With out knowing the strings attached to the offer? I refuse.

Interaction 4

Baraka: I won't allow others to fall into this sickness!

Y/n: Then die as a take your DNA for my own understanding.

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Tanya

Interaction 1

Tanya: The Umgadi will not let you in!

Y/n: Good. I don't need them anyways.

Interaction 2

Y/n: You're being held back by your own virtues.

Tanya: If anyone is being held back, it's you.

Interaction 3

Tanya: Begone from this place, devil!

Y/n: Sorry, but I don't listen to weak words.

Interaction 4

Y/n: Worship God? He's been dead for years, Tanya!

Tanya: You... You lie...!

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Geras

Interaction 1

Geras: In a different timeline, you were a good person.

Y/n: I find that hard to believe, considering the type of person Rias is.

Interaction 2

Y/n: Tell me. Does Rias betray me in all Time-lines?

Geras: No, because you aren't even in all of them.

Interaction 3

Geras: You are an anomaly in your own timeline.

Y/n: Anomaly...? I'm just as real as you, Geras.

Interaction 4

Y/n: If what you said is true, then Rias created me.

Geras: Then I will destroy the error that she had made.

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Reptile

Interaction 1

Y/n: You're a monster.... just like me.

Reptile: We're nothing alike.

Interaction 2

Y/n: Stop denying who you are!

Reptile: *laughs* I'm not denying it, unlike you, Ankokuboshi.

Interaction 3

Reptile: The human form you hold won't hide the monster that's inside you.

Y/n: *scoffs* It's not meant to hide the monster, but show what a monster can look like!

Interaction 4

Reptile: Others may be fooled by your looks, but I know what you are!

Y/n: How do you know about my true nature?

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Havik

Interaction 1

Y/n: I could use your chaotic spirit

Havik: What could you have to offer me?

Interaction 2

Havik: Help me destroy Seido's-

Y/n: I'm not following anyone's orders but my own.

Interaction 3

Y/n: Killing might do this world a favor.

Havik: *growls* What does it take to shut you up?!

Interaction 4

Havik: I just want to see Seido freed by chaos!!!

Y/n: You want chaos? I'll give you chaos.

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Ashrah

Interaction 1

Ashrah: It's not to late to save yourself.

Y/n: Oh it's far to late for that, girl.

Interaction 2

Ashrah: What happened to the light that was once inside of you?

Y/n: It was killed by those who thought they knew better than others.

Interaction 3

Y/n: A Devil, fighting for peace? *laughs*

Ashrah: You know nothing, about who I really am.

Interaction 4

Y/n: As long as there's light, there will be darkness!

Ashrah: Which is why I will work to keep the light shining brighter than your darkness!

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Sindel

Interaction 1

Sindel: Outworld won't bend to your will!

Y/n: I don't need it to bend. I just want it destroyed.

Interaction 2

Y/n: I'll make sure you and your daughters fall into delusions

Sindel: Hurt them and you will die!

Interaction 3

Y/n: Outworld will face my wrath!

Sindel: A colorful threat, but can you pull it off?

Interaction 4

Sindel: It's time you perished, Ankokuboshi.

Y/n: Not yet. Not until Rias dies!

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General Shao

Interaction 1

Shao: My forces will not bow to you!

Y/n: I don't need them to bow. Just to understand who I am.

Interaction 2

Shao: You can't win against me! You're but a mere child!

Y/n: You'd be surprised what this "child" is capable of~

Interaction 3

Y/n: You need an army? Well I'm my own.

Shao: Then defeating you will prove my strength!

Interaction 4

Y/n: I can make you leader. If you follow-

Shao: I'll take that throne with my own hands!

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Nitara

Interaction 1

Y/n: A vampire? Please.

Nitara: You will regret underestimating me.

Interaction 2

Y/n: I'll burn you on a stake, like every other vampire.

Nitara: An idea that you won't be able to fulfill

Interaction 3

Nitara: How is it you are immortal without needing blood?

Y/n: Because I'm a devil, not a vampire

Interaction 4

Nitara: You'll make for a good appetizer~

Y/n: You can't drink my blood. It'll kill you, literally.

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Shang Tsung

Interaction 1

Shang Tsung: What is this power that you wield?

Y/n: It's only the despair of the masses.

Interaction 2

Shang Tsung: When I kill you, I shall claim that negative energy and use it for my own.

Y/n: Then die trying, knowing you'll fail.

Interaction 3

Y/n: A sorcerer? Please, you stand no chance against a devil.

Shang Tsung: I'm not a sorcerer. I am the most powerful one human ever known.

Interaction 4

Y/n: You have a raw power, which I will be taking from you.

Shang Tsung: Then come and test your might, foolish child.

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Reiko

Interaction 1

Reiko: If you wish to take Outworld, you'll have to go through me!

Y/n: Then I'll make this quick.

Interaction 2

Reiko: You don't deserve to battle General Shao!

Y/n: You're right. Because I can kill him like I will you.

Interaction 3

Y/n: Your loyal to the one you care about. I can respect that.

Reiko: Then why do you still wish to fight me?

Interaction 4

Y/n: If you were in Rias's place, being my friend... would my life have been different?

Reiko: Don't ask me any useless questions!

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Omni-Man

Interaction 1

Omni-Man: You don't seem to understand, kid. Earth isn't yours to conquer.

Y/n: You're right, it isn't. Because I'm destroying it!

Interaction 2

Omni-Man: You look pathetic.

Y/n: Assuming I'm weak will be your demise.

Interaction 3

Y/n: If you think you can save my soul, then you're mistaken, Hero!

Omni-Man: I never said I was a hero.

Interaction 4

Y/n: *giggles* An Empire of people like you? Perhaps I shall turn you into my servants.

Omni-Man: Like you can tame a Viltrumite.

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Quan Chi

Interaction 1

Y/n: Your sorcery... what is it?

Quan Chi: I never reveal my secrets.

Interaction 2

Quan Chi: Your soul might make good with my magic.

Y/n: You won't claim it. Not until revenge is mine!

Interaction 3

Quan Chi: You wish to learn from me?

Y/n: You Dark Magic might come in handy for me.

Interaction 4

Y/n: Dark Magic... I've never seen this type before...

Quan Chi: Overwhelmed by its power, child?

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PeaceMaker

Interaction 1

Y/n: Killing me won't bring the world to Peace, fool!

Peacemaker: Then I'll just kill you and anyone on the way to it.

Interaction 2

Y/n: *evil smirk* Activate Human-

Peacemaker: You're dead, Y/n!

Interaction 3

Peacemaker: You really are obsessed with power

Y/n: It's how I'll find my inner peace.

Interaction 4

Peacemaker: Gotta admit, that Silver-Haired girl with the eyepatch. Easy takedown.

Y/n: You... hurt Laura?! YOU'LL PAY, PEACEMAKER!!!!!!

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Ermac

Interaction 1

Y/n: A living collections of souls? This is what Quan Chi is capable of?

Ermac: Correct. And you won't be around much longer to speak of it.

Interaction 2

Ermac: Your soul will soon be a part of "us".

Y/n: *giggles* You'll die if you take it, but go ahead. Try your luck.

Interaction 3

Y/n: Are you some sort of zombie?

Ermac: We are a living set of souls.

Interaction 4

Ermac: You think that you're immortal?

Y/n: Considering Devils can live for who knows how long, yes.

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Homelander

Interaction 1

Y/n: *giggles* Come and serve me, John Gillman.

Homelander: *dark tone* It's... Homelander.

Interaction 2

Homelander: You know, you look like a girl. Maybe you give a good-

Y/n: I'll chop that "thing" off right now!

Interaction 3

Y/n: A God vs a Devil. Which one will prevail?

Homelander: The God before you.

Interaction 4

Homelander: You're not even worth looking at.

Y/n: And a mongrel like you isn't even worth my energy, yet we are.

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Y/n Ankokuboshi (If other player choose him [Ditto Battle])

Interaction 1

Y/n: What are you doing here, "me"?

Y/n(Other Self): I'm not her. I'm truly you.

Interaction 2

Y/n(Other Self): Y/n, you can accept your flaws and-

Y/n: Shut up! Revenge is my only driving force!

Interaction 3

Y/n: Why...? Why are you here?

Y/n(Other Self): To do what you can't.

Interaction 4

Y/n(Other Self): A battle with my own self? Interesting.

Y/n: I don't know what's going on, but you'll die for looking like me.

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Fatality 1 (Delusional Input)

Y/n walks up to the enemy, and pins them to the ground, and after activating his Ghoul Powers, he pins the opponent down, and injects a finger into theri brain. Y/n's finger then glows purple, as he starts injecting negative emotions into the person's mind, and after a bit of time, causes the opponent's mind to literally be blown.

Fatality 2 (Dimensional Trip)

Y/n grabs the enemy using his Ghoul powers, and then using Gehaburn, cuts a whole through reality, and appears in the Dimensional Gap. Y/n simply smirks as he watches his opponent be turned into nothingness in mere seconds.

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Now... for the main reason why I think having Y/n Ankokuboshi would be an interesting character, if he was thrown into the world of Mortal Kombat 1...

Tower Ending

After a quick cut to black, we see Y/n fighting many of the fighters within the world of Mortal Kombat, with powerful ones such as Shang Tsung, Geras, and Liu Kang all dead behind him, as Y/n is using all of his powers in his own blinded rage.

Y/n: Trying to fix what appeared to be a mistake within the rewritten time, Geras stole me from this timeline to have one of the fighters of their timeline killed me in what they called "Mortal Kombat." He thought I was weak and would be easy for the fighters. But what he failed to account for was the raw desire for my revenge fueling me to kill every being within this place called "Earthrealm", and that mistake ended up destroying him in the end.

The scene then shows Y/n sitting near an hourglass, with a ton of dead bodies laying around him consisting of all of the other fighters.

Y/n: It was through this one incident I learned about the hourglass, and various other "mes" who were betrayed in similar fashion to me and while some pleased me by destroying their betrayers, some were stupid enough to forgive, making the betrayal meaning literally nothing to them.

It then shows Y/n seeing some timelines, with some being happy, and others showing angry.

Y/n: Those who did seek out and fulfill their revenge did please me for a time... but it wasn't enough to quell my rage against humanity and the supernatural world.

The scene then changes to show a giant portal, with Y/n killing the various other Y/ns in brutal fashions, with a new set of clothes on.

Y/n: So I killed them. Every variant of myself that existed within time I brutally murdered and when I was done them, I took their powers as my own. It did please me, harming the various versions of you, as well as the ones who only went so far in revenge, but it still wasn't enough for me. I knew it was only a matter of time before I came back to you~

The scene then shows Y/n standing in front of his timeline's Rias Gremory, with her being tied up and on the ground, scared for her life.

Y/n: Which is why I want to know...! Why are you so scared~?

As Y/n says this last line, his body starts changing to what he looked like before Rias betrayed him and left him for dead.

Y/n: *GIF Below*

(A/n: The GIF belongs to Dush20)