(Alright folks, start of Season 2 where Y/n's past will be built upon during the season and this is the episode where I will introduce Finn's love interest. I hope yall enjoy the surprise at the end of the chapter.)

[The episode begins in Marceline's cave just outside of Marceline's house. Finn is beat-boxing, Y/n is tuning his guitar, and Marceline is strumming her ax bass guitar.]

Marcy: Thanks for helping me record, Finn, Babe.

Finn: No problem, Marceline.

Y/n: Anytime, Babe.

Marcy: Now, I'm gonna sing something really personal, so don't laugh at me.

Y/n: I would never dream of it... m'lady. [Laughs]

[Scene shifts to the inside of Marceline's house.]

Marcy: Now, start a slow beat, and keep it steady, or it'll mess up everything.

Y/n: Gotcha.

Finn: You got it!

[Finn starts beat-boxing, Y/n starts a slow and steady beat, and Marceline begins singing the Fry Song. Eventually, Finn's beat-boxing slows down and he sighs.]

https://youtu.be/ympg3SVec60

Marcy: Huh? Finn, you messed the beat up!

Y/n: Come on man, I had that beat down perfect.

Finn: Marceline, if you're thinkin' about your dad so much, then... why don't you go see 'im?

Marcy: [Strums guitar] He's not worth the effort.

Y/n: Trust me he isn't...

Finn: Not worth what effort?

Marcy: Well... first, I'd have to draw a circle with a happy face in the center and then... uh... douse it with bug milk.

Finn: [Finn finishes drawing the face] Oh, yeah?! [Goes to grab some bug milk, then returns to throw it on the face; the bug milk gets absorbed by the face.]

Y/n: [Sighs] And then you're supposed to chant something like [The happy face glows and the candles next to it light up], "Maloso vobiscum et cum spiritum." [Finn laughs and the face changes color.]

Marcy: But... I-I don't really wanna see him. I'm still mad about the thing with the fries. [Marcy notices a strange noise and finally looks at Finn.] Huh?!

Y/n: Oh no...

Finn: Wwwwhhhat?! [The room changes color drastically; a portal to the Nightosphere opens where the face was.] Whoa... whoa!! Aaagh!!

[Marcy's father emerges.]

Y/n: Oh dear god.... not him... Hudson Abadeer....

Hudson: Marceline! [Notices Y/n] And the boy who my daughter soul bonded to!

Y/n: You know my damn name Hudson....

Marcy: Finn... what the heck did you do?!

Finn: I... reunited you with your family?

[Marcy and Y/n grunt angrily and Finn backs away.]

Hudson: Is this kid your guys's evil servant?

Finn: I'm not evil, Marceline's dad. I'm super good!

Hudson: "Super good?" [Roars]

Finn: [Gasps; Hudson grabs Finn, and begins sucking energy from him.] What're you doing?!

Hudson: Stealing your soul.

[He continues and Finn screams in fright.]

Marcy: Dad! Y/n a little help? [ Y/n nods and separates the two] Ugh! You always do stuff like this!

Hudson: Haha! Oh, Marceline! I never know what's gonna set you off! Whoa! Is this the family ax?

Marcy: Wha—? HEY!!!

Hudson: Did you turn it into some kind of lute?

Marcy: [Yelling in anger] Give it back, and get out!!!

Y/n: Or else I'll make you!

Hudson: Alright Son of Death's Best Reaper.

Y/n: Keep my mother's name out of your goddamn mouth Hudson.

Hudson: Okay, I'll go. I've got business to attend to, anyway—sucking up all the souls in Oooooo...

Finn: [Stammering] WHA—Gh—NO!!

Hudson: See you kids later! [Opens door]

[Hudson laughs maniacally as Finn screams, terrified. Marceline's father shuts the door.]

Marcy: My bass!

Finn: I've unleashed evil onto Ooo ! We've gotta stop 'im, Marceline! Bro!

Marcy: Fine... but I'm only coming with you to get my bass back.

Y/n: I'm only coming because the bastard used my mother's title with his dirty mouth.

[Scene shifts to Y/n, Finn, and Marcy flying above a forest.]

Finn: Hey! How do I kill this guy, anyway?

Marcy: Finn! You can't kill my dad!

Y/n: Can-

Marcy: You can't either!

Finn: Oh! I'm sorry! I didn't mean—

Marcy: No! You literally can't kill my dad! He's deathless! Like Y/n's Immortality but Evil!

Finn: Oh...

[Scene cuts to a field elsewhere; a bunch of Fluffy People are running around and laughing.]

Fluffy Person: [The Hudson's shadow falls upon him and he stops running.] Huh? [Camera zooms out to show Hudson.] Who the fluff are you?

Hudson: Um... Well, I'm sure not the guy who's gonna suck out your soul.

Fluffy Person: Good 'cause that's, like, my number one fear.

Hudson: Really!? Well... I know a little exercise for that! Wanna try??

Fluffy Person: Wow...

Hudson: First... close your eyes.

Fluffy Person: Okay! [Gets pounded by the ax bass.] AAH! You coulda killed me!

Hudson: Ah, but I didn't! And now, aren't you thrilled just to be alive?

Fluffy Person: Yeah, I guess... So what?

Hudson: So... This next part will be all the more... horrifying. [Laughs maniacally as his transformed face moves towards the screen, sucking the fluffy person's soul. Scene goes back to Y/n, Finn, and Marcy.]

Finn: There!! Below us! A gathering of Fluffy People! May-haps they've seen your father! Marceline... Bro... release the Finn-bomb! [Marcy drops him and he whistles to mimic a bomb falling; Y/n catches him before he reaches the ground and he makes an explosion noise. He notices the Fluffy People shivering.] They're all freaked out!

Marcy: It's because they're scared of him. [Camera pans over to the Fluffy Person from earlier. He is floating and moaning. Marceline examines him.] Hm. My dad's been here. Come on. Let's go.

Finn: No! We gotta help this guy. I've got some soul food that Jake packed for me. You like, uh, collard greens or country-fried steak?

Y/n: Nah, give em some good fried chicken and mac-n-cheese and they will be good to go.

[Finn tries to feed the Fluffy Person the food but he keeps moaning and doesn't eat it.]

Y/n: Damn... it's worse then I thought. Nobody can resist good soul food...

Marcy: Look. You wanna help him? Help me get my bass back.

Finn: How will that help hi—?

Marcy: MY DAD STOLE MY BASS GUITAR, FINN!! And when I get it back... I'm gonna break it over his neck and slam my dad back into the Nightosphere!

Y/n: And then I'm gonna burn him to a crisp for using my mother's name in his mouth! No-one but me and my loved ones are allowed to use her name...

[Fluffy Person bumps into Finn.]

Finn: Oh, clam! But first you gotta return the souls your dad sucked back to these sad, little husks. Right, Marceline? Bro?

Y/n: Yeah we will...

Marcy: [Blows tuft of hair away from her face] Uh, sure, yeah, yeah, we'll do that.

[Scene cuts to the Marauder Village. The Marauders are sitting at a table talking.]

Head Marauder: So I popped his head like a cork! And I says, "That's what I think of Expanding Earth Theory!"

[They all laugh. A noise is heard and they stop laughing.]

Hudson: Alright.

Marauders: Huh?!

Hudson: I've got a joke, too. [It's revealed that he sucked Marauder #14's soul. Hudson pushes him off the chair.] What wears a dark suit, is completely evil, and is about to suck out all your souls?

Head Marauder: Yo mama!

Hudson: [Beat] That's right! I'm your mama! [Sucks the marauders' souls]

[Scene cuts back to Y/n, Finn, and Marceline.]

Marcy: Red Rock Pass. If my dad wants to get through the mountains, he'll have to come through here.

Y/n: And trust me, he will want to come thorough here.

Finn: We can work together! And smash 'im with this rock! And once he's smooshed, all the souls will go back to their rightful bods.

[Finn notices the Hudson in the pass singing "Stompin' On Ants." The Lord of Evil then sucks the ants' souls. Finn tries to push the rock, but he notices that Marcy flew down to attack her father by herself instead with Y/n following her. Marcy hisses and charges, but misses her father who ducks. Y/n manages to get a good punch in on Hudson's face causing him to stumble back.]

https://youtu.be/tZ-9AvAt__0

Hudson: Nice punch boy, and Marcy finally taking a run at your old man, huh?

[Marcy charges, but her father parries the attack and forces her to a wall. Marcy hisses. Y/n manages to kick Hudson in the back.]

Marcy: [Losing patience] Daddy...

Y/n/Hudson: Yes?

[The two look at each other for a second]

Marcy: My sperm donor...

Y/n: Ah sorry...

Hudson: So you are her are that close eh? I had a feeling, glad I managed to finish my project then.

Y/n: Project?

Hudson: A surprise for later.

[Marceline jumps on her father's shoulders.]

Hudson: [Chuckles] Karate kick!! [Kicks Marcy off his shoulders; she lands on the ground hissing.]

Finn: Marceline!! Keep 'im right there!! HrrrrRAAAAGH!!!

[Finn headbutts the rock to make it fall off the cliff and groans in pain. While fighting,  Y/n, Marcy and her father manage to evade the rock. Finn adopts a look of desperation. Marcy struggles to reclaim her bass.]

Hudson: Karate chop!! [He chops her; she hisses.] You can't destroy me!

Marcy: [Hisses] [Calming down] No... D-dad... I-I don't wanna destroy you... [Angered] Look, just... stay out of my life!! [Floats away]

Hudson: You're not even alive!

Y/n: Just stay out of her life man... in fact, stay out of mine too. You might technically be my "dad" because of the soul bonding. But you ain't my daddy... You can never compare to my moms... [flies away]

[Marcy and Y/n rest next to Finn.]

Finn: You blew it, dudes. We're supposed to be a team—a team whose sport is stop-your-dad-from-suckin'-souls... ball.

Marcy: [Sighs] I just want my dad to care about me.

Y/n: Really?

Marcy: Yes really... You've told me stories about your moms... and I just want a relationship with my parent like the one you had with your moms with my only living parent....

Y/n: Marcy....

[Finn frowns; scene shifts to the Ice Kingdom.]

Hudson: Of all history's greatest monsters, you are by far the most evil thing I've encountered. Offer your soul to me, dark one.

Gunter: Wenk wenk.

Hudson: NO! You can't have my soul! I don't even...! Look, just get in here.

[He tries to suck its soul, but it slaps him.]

Gunter: Wenk wenk.

Hudson: [Kicks penguin away] Keep your crummy soul!

[Gunter flies through the air, crying, and is caught by the Ice King.]

Ice King: Gunter! Who told you you could fly?!

Gunter: [Pointing at Hudson] Wenk.

[Hudson sucks another penguin's soul.]

Ice King: Huh? No one sucks the life from my penguins except me! ...And maybe polar bears, because that's just nature, Gunter. [Flies over to Hudson] You darest encroach upon my domain?! [Hudson's face changes.] You've raised my frosty dander! And for that, I shall— [Hudson shows Ice King his terrifying face.] AAAAAOOOOOHHH!! I've soiled my tunic... completely by choice! [Flies away]

[Hudson sucks all of the penguins' souls and starts growing.]

Hudson: YES!!

[Y/n, Marcy, and Finn are shown hurrying over.]

Finn: Aw, man! He's growing huge!

[Y/n sucks some birds' souls; he begins sucking souls from all over Ooo.]

Finn: I'm gonna take 'im down!

Marcy: Finn, you're like an ant to him.

Finn: Oh, yeah? Well, this ant's about to get in his pants!

Marcy: [Deadpan, amused] What?

Y/n: Man... we gotta work on your phrasing...

Finn: [Stammers, embarrassed] You know! [Picking up Sword of the Dead] Because I'm going to make him uncomfortable while I release those souls! RAAAAAAAAGH!!! [Climbs up Hudson's body] Give up those souls, Marceline's dad! In the name of justice!!

Hudson: Huh? [Not noticing Finn] Oh, Marceline, Y/n. Still following me?

Marcy: We'll stop following you if you give me back my guitar!

Y/n: Just give her it back Hudson.

Hudson: [Flicks Finn off with ease] No, Marceline, Y/n.

Finn: [Flying upwards] NO ONE FLICKS ME IN THE BUTT WITHOUT MY CONSENT!!! [Descends and stabs Hudson in the head. Hudson smiles at Finn and reveals his second, monster-like head. He falls while screaming and grabs hold of a tentacle. Hudson tries to shake Finn off but he won't let go. Finn is grunting and screaming all the while.] Whoooaa!! [Hudson stops shaking.] The souls... Lumpy Space Princess! He got your soul, too?!

LSP: What? Nah. I totally saw Hot Dog Princess get sucked in here, and I wasn't invited?! I was all, "What the lump?" so I'm crashin' this party!

Finn: Well, I'll save you... I'LL SAVE ALL OF YOU!!

[Hudson tries to knock Finn off with his appendage; Finn evades and struggles until he cuts off the appendage, making himself and the Ax bass fall; Marcy rushes over and catches the bass, and Y/n helps Finn land on the ground.]

 Marcy: IN YOUR FACE, DAD!

Y/n: Suck it Hudson!

Hudson: Give back that ax, Marceline! You don't respect it enough!

Marcy: Well... you don't respect anything! Dad!! DAD!! I'm outta here!

Y/n: Wait we still gotta-

Hudson: Fine!! Go!! I'm too busy sucking to deal with you!

Finn: NO, WAIT! Marceline!! Keep talking to 'im! When he's talking, he can't steal souls!!

Marcy: I said I'm outta here!

Y/n: Marcy come on.....

Marcy: No babe, you coming or what?

Y/n: Marcy... what about what you told me earlier?

Marcy: I don't care anymore...

Finn: [To himself and digging around in his backpack] Diversion... need... diversion. [He gasps, pulls out the Walkman and plays the song he, Y/n, and Marcy recorded earlier. Both Marcy and her father stop dead in their tracks. Marcy blushes and her father turns around.]

LSP: Oh, my Glob, you guys! Drama bomb!

Y/n: NOT THE FUCKING TIME LSP!

LSP: Jeez sorry...

Hudson: Marceline, do you really feel this way?

Marcy: Dad, I...

[Finn sneaks closer to Hudson.]

Hudson: Marceline... of course I love you.

Hudson: Y/n, I'm sorry for using your mother's name. It wasn't cool of me.

Y/n: I'm still upset but I'll forgive you for Marcy's sake.

Marcy: Y/n... Dad...

Hudson: Marcy, I'm sorry I ate your fries. I didn't mean to hurt you.

Marcy: It's okay, Dad. It's... it's really okay.

Hudson: No, it's not okay. They weren't even very good. They were really cold. I love you, Marceline. Don't you ever doubt that.

Marcy: I love you, too, Dad.

Y/n: This is so beautiful.

Hudson: [Tearing up] Oh, Marceline, I am so—

Finn: [Flying through the air] YALALALALALALALALALALALALA!!!!!

[Finn stabs Hudson's soul sack with two swords making him scream in pain; the souls are released. Finn drops down and repeats the summoning process.]

Finn: MALOSO VOBISCUM ET CUM SPIRITUM!! [Hudson is transported back to the Nightosphere.] [Low, growling voice] I'll see you in the Nightosphere, ya sick freak. [Marcy  and Y/n gasp] YES!!!!

Marcy: Finn!! How could you do that?!

Finn: How could I... save the day?

Marcy: How could you embarrass me like that and then stab my dad?!

Finn: How could I embarrass-save you?? [Marceline attempts to ax Finn.] WHOA! Marceline!

Y/n: Calm down Marcy.

Marcy: [sighs] Sorry, I'm glad he's back in the Nightosphere. That was emotionally exhausting.

Y/n: Tell me about it.

Finn: I'm also exhausted emotionally. Or... wait. I mean, I mean physically.

[Finn falls down on the ground, exhausted. Marcy and Y/n join him. The souls are floating around the sky and Marcy chuckles at them.]

Marcy: I've been meaning to ask you... What's with that pocket on your shirt?

Finn: Oh, Jake's in here. 'Sup, Jake?

[Jake rolls over and farts]

???: Excuse me? Are you two Y/n and Marceline?

[All three of them look and see a girl with white hair and red eyes standing where Hudson once was. She was no older then 12 years.]

Y/n: What the?

Marcy: A little girl?

Briar: My name is Briar and grandpa told me to give you this note.

Y/n: Grandpa?

[Briar works over to Marcy and Y/n and hands them the note.]

Y/n: Dear Y/n and Marcy, I've been working on this project for the last 12 years. Her name is Briar and she is a combination of both of your DNA's. Enjoy parenthood!

Marcy: That means she's our....

Y/n: Daughter.....

[Briar then hugs the both of them]

Briar: Mama! Papa! It's so nice to meet you!

[The two of them stand their frozen. Briar then let's go of the hug and notices Finn and walks over to them.]

Briar: Hi I'm Briar and you're cute.

[Finn freezes and blushes]

Finn: Uhh...

[The episode ends]

(THAT'S RIGHT! FINN'S LOVE INTEREST HAS BEEN REVEALED AND IT'S THE DAUGHTER OF Y/N AND MARCY CREATED BY MARCY'S FATHER USING THEIR DNA! SURPRISE! BETCHA DIDN'T SEE THIS ONE COMING!)