By the time that a pissed Marceline and Finn have caught up with him, Hunson has already sucked up the souls of a lot of denizens of Ooo. And grown really big. Finn tries to attack him, while he is distracted by Marceline's swearing. Finn discovers that the sucked up souls are literally in him... in his neck... whatever it is, and tries to free them, but instead drops himself and Marceline's bass to the ground. Marceline is satisfied and turns around to go back home, while Dad turns back to sucking the souls. Finn, exasperated, turns on the recording of Marceline's song he still has on him. It forces Marceline and her Dad to finally talk about it, and Dad starts apologizing... at which point Finn climbs up him and cuts him with his sword, freeing the souls, and immediately sends him back to The Nightosphere the same way he was summoned. Marceline is mad at Finn for first embarrassing her and then interrupting her reunion with her dad... but ultimately, not very much, because being near him is exhausting.
"It Came from the Nightosphere" contains examples of:
- Accidental Incantation: When Finn asks Marceline about her father, she mentions that he can only be summoned by performing a specific ritual and speaking a particular incantation; she then speaks it, unaware that Finn has been performing the ritual behind her back, leading to her demonic father being unleashed onto Ooo.
- Attack of the 50-Foot Whatever: By the moment Finn and Marceline catch up with him, Hunson has absorbed enough souls to turn into a giant, monstrous form. You have to wonder why Finn didn't ask Jake for help.
- Bring My Brown Pants: The Ice King claims to have soiled himself ("Completely by choice!") on seeing Hunson's Nightmare Face.
- Card-Carrying Villain: Hunson Abadeer, a.k.a. the Lord of Evil, describes himself as "completely evil".
- Catch a Falling Star: Subverted. Marceline sees that Finn and her axe bass are falling from a great height. She rushes over and catches... her bass Just in Time, and lets Finn hit the ground.
- Complete Immortality: According to Marceline, her father can't be killed.
- Did You Just Flip Off Cthulhu?: When Hunson attempts to claim Gunter's soul, Gunter bitch-slaps him. Subverted when it's later revealed that Gunter is actually equal to if not above Abadeer in power.
- Even Evil Has Loved Ones: Hunson Abadeer may be a card-carrying soul-sucking fiend from the Nightosphere, but he still loves his daughter.
- Exact Words: When Marceline tells Finn that he can't kill her dad, he thinks she means it's because she still loves him, until she clarifies that Finn is physically unable to kill her dad; "He's deathless."
- Faux Affably Evil: Hunson acts fun, but is also a soul-eating demon. At one point, he teaches a fluffy person to be grateful to be alive, so that it will be more horrifying when his soul gets sucked out.
- Foreshadowing: Much later in season six, the comment about Gunter being the most evil thing Marceline's Dad had ever encountered turned out to be true.
- Freudian Excuse: Marceline has some hard times with her father, which is expanded on later on.
- Hypocritical Heartwarming: When Ice King discovers Hunson sucking out his penguins' souls, he has this to say.Ice King: No one sucks the life from my penguins except me! And maybe polar bears, because that's just nature, Gunter.
- I Would Say If I Could Say: This exchange:
- Killer Rabbit: Marceline's dad says that Gunter is the most evil entity he has encountered so far in Ooo. Gunter proves it by No Selling Hunson's attempt to suck his soul, and slaps him.
- Metaphorgotten: After their first failed attempt to get Marceline's dad, Finn scolds Marceline with "We're supposed to be a team! A team whose sport is 'Stop Your Dad From Sucking Souls' Ball.
- Nightmare Face: Hunson's distorted face that terrifies the Ice King, which is too scary for the audience to see.
- Noodle Incident: Marceline sings a song about the one time her dad ate her fries and it really upset her.
- No, You: Gunter apparently turns Hunson's request that he offer his soul around, demanding Hunson's soul instead.Hunson: NO! You can't have my soul! I don't even...! Look, just get in here.
- Our Demons Are Different: Hunson is a powerful demon from a dimension known as "the Nightosphere".
- Out of Focus: Jake appears at the last second, but he doesn't have any lines.
- Poor Communication Kills: Finn tricks Marceline into completing the ritual to summon Hunson Abadeer, but she makes it clear right after she speaks the incantation and his summoning is locked in that she doesn't want to see her dad again.
- See You in Hell: After banishing Marceline's dad, Finn quips "I'll see you in the Nightosphere, you sick freak."
- Shout-Out: Marceline's red striped sweater is similar to the Iconic Outfit worn by Freddy Krueger.
- Skewed Priorities: Marceline is more concerned by the fact that her dad ate her fries and took her favorite bass guitar than by the fact that he's a soul-eating demon-lord who's a threat to all of Ooo.
- Suspiciously Specific Denial: When Hunson encounters the Fluffy People:Fluffy Person: Huh? Who the fluff are you?
Hunson: Well, I'm sure not the guy who's gonna suck out your soul... - Take That!: When Marceline's Dad attacks the Marauders, the leader has just boasted about killing someone who annoyed him by talking about the idea that the Earth is expanding, a crank theory which, among geeks, is notoriously supported by comic artist Neal Adams.
- That Came Out Wrong: When Finn resolves to defeat Marceline's dad near the end, it leads to this exchange.Marceline: Finn, you're like an ant to him.
Finn: Oh yeah? Well, this ant's about to get in his pants!
Marceline: (raises a bemused eyebrow) What?
Finn: Well, you know... 'cause I'm gonna make him uncomfortable when I release those souls! - Visual Innuendo: In his monster form, Hunson's head looks like the shaft of a penis, while his mouth is shaped like a vagina. This ended up receiving Cartoon Network's attention and scorn, and yet made it to airing, anyway.
- Your Mom: When Marceline's Dad encounters the Marauders.Hunson: What wears a dark suit, is completely evil, and is about to suck out all your souls?
Marauder: Yo mama!
Hunson: (beat) That's right. I'm your mama! (sucks out their souls) - Your Soul Is Mine!: When summoned into the Land of Ooo, Marceline's Dad proceeds to suck the souls out of everyone he meets. Well, almost everyone. He initially tries it on Finn, only to be stopped by Marceline.Marceline: Dad! You always do stuff like this!
Hunson: (laughing) Oh, Marceline. I never know what's gonna set you off!
