Ok, after seeing this awesome video:

It makes me wonder what other Hazbin Hotel characters would say to Mortal Kombat characters. Honestly, I feel like they would fit right in with the roster. Here are my takes:

Smoke: Doesn't your face hurt from all that smiling?
Alastor: My dear Smoke, this smile is my deadliest weapon.

Angel Dust: Tell me, big boy, what else does that zaterran tongue do?
Reptile/Syzoth: It's better if you don't know.

Tanya: You would've made an excellent Umgadi.
Vaggie: Sorry, but my place is at the hotel.

Vaggie: If you ever need help on your quest, the hotel is always open.
Ashrah: That would be wonderful, Vaggie!

Charlie: So a demon can redeem themselves!
Ashrah: So far, but my journey is far from over.

Lute: Your whole existence is vile and blasphemous!
Mileena: At least I was not made to be somebody's tool!

Alastor: Why where the mask? Let me see that smile!
Mileena: You would not like my smile when it tears your throat out!

Adam: Why chase after some thunder (Raiden) dick and get with "first man" dick instead?
Kitana: How is it that you're worse than Peacemaker?

Angel Dust: If you're ever looking for entertainers...
Johnny Cage: Not THAT kind of entertainment, Angel!

Ashrah: I can help you break your bonds.
Angel Dust: Whoa whoa whoa (scared)! You are going nowhere near Valentino!

Those are the best ones I can think of at the moment. What do you think of these interactions? What would be some cool or funny interactions between other characters?

Don't forget Quan Chi

I count only half the cast from the game on here... and there's no Peacemaker.

7960570

Charlie: So you're looking for redemption? Throw away that rusty old sword and come on down to the—
Ashrah: You shall not speak of Datusha that way!

Angel Dust: I know some nightclubs down in hell that would pay a hardbody like you a fortune to work the poles.
Quan Chi: The Netherrealm is about misery and despair, you imbecile!

May we see interactions with Omni Man and interactions with Peacemaker?

7962151
They already provide those in the game.
7960873
Nice! Here are some extra ones.

Adam: No wonder your realm is so fucked up, there's no Adam in it!
Geras: We believe, for the better!

Angel Dust: What's the matter, snowy? Afraid I might give you blue balls?
Sub-Zero: Disrespect me again, and the only thing that will be blue will be your frozen corpse!

Nitara: Finally, I get to find out what angelic blood tastes like.
Vaggie: Not with that attitude you won't.

Angel Dust: Nice sword, can I touch it?
Kenshi: Sento and I are off-limits.

Kung Lao: You know face the mighty Kung Lao!
Husk: Get over yourself you chosen wannabe bitch.

Here are some additional ones from Helluva Boss characters.

Johnny: I didn't know we were fighting werewolves now. Awesome!
Loona: I'm a Hellhoud, asshole!

Blitz: You looking hot tonight, Daddy.
Scorpion: Stay over there!

Loona: Your human disguise is pretty sick.
Reptile/Syzoth: This "disguise" is what got me banished by my own people.

General Shao: I will crush you like the insect you are!
Millie: Nobody told ya I killed a sea monster before, did they?

Millie: Nice ax! But mine is bigger.
General Shao: You will not think so once you are torn apart by it!

Johnny: Nice bow tie, shrimp! Your wife tied that for you?
Moxxie: At least I'm still married to my wife.

I know there are some good ones involving Scorpion, Havik, Raiden, and Liu Kang. But for some reason, I can't think of any at the moment. What do you think?

7962151

Omni-Man: You look like a suitable mate. How long is the gestation period of your species?
Angel Dust: I'll gestate for however long you want me to, sweet cheeks.

Peacemaker: Psst, hey. You got my merch?
Charlie: One Princess of Hell overstuffed plushie! That'll be 1/666th of your soul plus tax.

Can we see more interactions between the Mortal Kombat characters and the Morningstar Family?

Johnny: Nice bow tie, shrimp! Your wife tied that for you?
Moxxie: At least I'm still married to my wife.

And here I thought Moxxie wouldn't hold up in the prematch banter.
7963843

7969985
I'll add more when I can think of some good ones. Though I'm always open to suggestions.
7969988
Moxxie has always been tougher than he looks, hehe.

7969990
Okay, take your time and think

Shao Khan: After Earthrealm, the Heavens shall burn and bow to me!
Sera: As long a I am here to protect this realm, we will not fall to the likes of you, tyrant!

7969990
My perspective is, his toughness always seemed to be more in his actions from my knowledge of his character.