Did this because of an ask sent to me on tumblr.

.

.

.

"Here's your invitation to the truce party," said Skulker, dropping the letter by Danny's head, "and here's the duty list. Pick something." He shoved a piece of paper into Danny's face.

"You know," said Danny, testing the rope Skulker had tied him with, "you get a lot better at chasing me when you're doing it for non-murder purposes."

Skulker scowled, but Danny knew better than to take his apparent facial expression as a sign of his true emotions. After all, the face Danny could see wasn't really Skulker's. It was a mask. One the tiny green jellybean inside could manipulate as he pleased.

"What do you mean, 'duty list,' anyway?" Danny blew the paper off his nose.

"It's a list. Of duties. For people who want to attend the party. You can't possibly imagine that one ghost does it all on their own, do you?"

"I don't know. Some living people are really into the holidays. Wouldn't surprise me if there was someone over in the GZ Obsessing."

"There are," said Skulker flatly. "But going to those parties is risky."

"Oh. Yeah. I guess that makes sense. So, is this, like, a potluck deal, or white elephant, or do I have to come set up, or what?"

"Read the list, whelp!"

"I would," said Danny, "if you held it far enough away for me to see what was written on it. "My eyes don't focus that close."

Grumbling, Skulker adjusted his position.

A lot of the things on the list were already checked off. The rest looked dangerous (fighting the Krampus), time consuming (holly acquisition, with a stupidly high number of branches listed next to it), expensive (providing new holiday table settings), confusing (Danny didn't know what a 'consoda' was, or why he would fetch offerings from it), or simply extraordinarily unappealing (after party cleanup). Except for one.

One that caught Danny's eye because of a very specific word that was included.

"Why's the star all by itself?" asked Danny.

"Because the star is important," said Skulker. "Adding the star to the tree is what starts off the real celebration. A star needs to be impressive. Dramatic! Not one of those little dinky tinsel things you can find at human stores."

Part of Danny knew he shouldn't- But when had he ever listened to that part of himself?

Actually, that wasn't really fair. He listened, otherwise he'd be fully dead instead of just half.

Still.

(The idea of making a star made his skin feel sparkly and fuzzy, like his whole body was half an inch from the surface of freshly poured soda, but all over.)

"I'll take it," he said.

"Humf," said Skulker. "Don't screw up, or you'll be in for a beating as soon as the truce is over." He made a mark by the name and started to fly off.

"Hey! Aren't you going to untie me?"

"Nah."

.

"He's late," said Desiree, sharply, glaring at Skulker as if he had any control over what the whelp did or did not do.

She wasn't the only one.

"He's not late yet," defended Skulker.

"You shouldn't have given him the star as a choice," complained Technus, his voice squaking like a poorly connected computer speaker. "You should have just told him what he'd have to do. Something that wouldn't ruin the party. He's a teenager! Teenagers are easily distracted."

"I didn't know you were a teen, techie," drawled Spectra, who really shouldn't have been at the party at all, seeing as she wasn't, and never had been, invited. Skulker was hoping someone would find a way to throw her and her little minion out before midnight.

"It's TECHNUS, MASTER OF TECHNOLOGY, CONTROLLER OF ALL THINGS ELECTRONIC AND BEEPING."

"I am sure Sir Phantom is on his way," said Princess Dora, softly, ignoring Technus's continuing rant with the ease of long practice. She would not be here the whole evening. Her kingdom had its own, separate celebrations, but they wouldn't start for well over half a human day. "He is a very responsible person, and he was speaking to me about stars just earlier this month." She frowned, slightly, swirling the darkly luminous wine in her glass. "That is, I think he was talking about stars. The conversation was somewhat difficult for me to follow."

"Oh, no," said Desiree, putting one hand delicately over a smile.

"What?" growled Skulker.

"It always bothered me a little, you see, but I hadn't realized quite why until just now." She was barely even trying to hide her delight. "The second time I fought him, it was during a meteor shower."

"So?" asked Amorpho.

"He was rather cross with me during the fight. At the time, I thought it was because he was missing that girl's party, or because of the whole memory wiping thing, but in retrospect..."

"Just spit it out already," said Skulker.

"I do believe you gave the task of making the tree star to a ghost Obsessed with outer space."

Inside the suit, Skulker's true hands slip off his controls for just a moment. "Oh, Ancients," he groaned.

"We're not getting a star this year, are we?" asked Ember.

Phantom chose that moment to barrel through the door. "Sorry!" he exclaimed, looking and sounding more like a little kid than Skulker had ever witnessed. "Am I late? No, I'm not. Never mind. I'm not sorry. What do you think?"

He held out the... thing in his hands for the assembled ghosts to view. It was... It was definitely a star. A round blue star. Complete with solar flares and sunspots. Animated flares and sunspots.

"How the hell?" whispered Walker in the background, despite the fact that he and his pink prison really had no room to talk.

"Is it no good?" asked Phantom, managing to shift his weight even though he was floating. "I turned the brightness way down so that everyone could see the details, but I think I could turn it back up again without too much trouble." He blinked up at the other ghosts, and Skulker noticed with some unease that his pupils were currently shaped like crescent moons. "I mean, the other one exploded, but I think I've got it, now."

All of the ghosts slid back, just slightly. Not that they were afraid of explosions, but, well, being cautious didn't hurt.

"Er," said Dora, "what is it, exactly?"

"A star! A blue giant, specifically. Well, a model of one, anyway, but I think it's a good model. I mean, it's a blue giant right now. I've got it set up so that it'll go through the whole life cycle of a massive star. Or, not the whole life cycle, because that would include the nebula, but the life cycle from this point? It'll change color and expand as the night goes on and it uses up its 'hydrogen'- I've scaled the expansion, though, don't worry, it won't take over- and then the core will collapse and the outer layers will be ejected, and- BOOM!- supernova!"

"Ghost child," said Technus, in a more strangled than usual voice, "are you telling us that's a bomb?"

"No, it's a star," said Phantom, blankly. On closer inspection, the crescents in his eyes were not the only modification to Phantom's appearance. He had pale green and silver stars scattered liberally across his nose and cheeks, and similar shapes in the black of his costume.

In the background, Desiree was dying of laughter.

"Don't you think a supernova might be... dangerous?"

"Oh, a real one, sure. But I tested one before I brought this, and all it did to me was singe my eyebrows off, and I was standing really close."

"Whelp," said Skulker, searching for some reason to reject Phantom's 'contribution,' "how is that even supposed to stay on the tree? It's just a ball."

"Oh, it'll float wherever I tell it to, don't worry, I've tested it!"

.

It perhaps said something about ghostly parties that the sudden detonation of the tree topper several hours later, the subsequent glee of the supposed superhero in attendance when the room was filled with star-shaped glitter and confetti, and the attempted homicide on the part of several glitter-unfriendly ghosts was not the most exciting series of events to occur that night.