Just something of a random chapter, using things that actually exist in Legends.
by lord Martiya
Year 18 of the Empire: Tarkin and Thrawn discuss about the Death Star
Tarkin knew just how dangerous Thrawn was-even without his performance in the Imperial Navy being so good he was a Grand Admiral, he had seen recordings of both his brief involvement in the Clone Wars and footage of what he did to a Trade Federation squadron that had breached Chiss space. That was why he wanted to know what he could do with him, and if he needed to kill him or what, and had engaged him in a conversation about the Death Star. Most of what he had said was as expected-but then the alien made a rather unexpected comment.
"Seriously, creating a planet killer isn't that urgent." he said.
"What did you just say?" Tarkin asked.
"That a planet killer isn't that urgent."
"What makes you believe a planet killer could ever be necessary?!"
"The planet is opening its maws!" the sensor technician of the Demolisher said.
"Do that. Now." admiral Screed ordered.
As once, his missile-armed ships fired their fire retardant warheads right in the maws of planet Ronyards, followed by the tugs that dropped ice asteroids and even a comet in it. And as expected, the Abominor that had escaped detection until it grew to planetary size slowed down and then stopped, the fire of its furnace snuffed out by the Imperial attack-just as per standard procedure.
"Send in the mining ships to dismantle the thing, and prepare the second salvo, in case one of the droids someone reactivates the furnace." Screed orderd without missing a beat. "Also, send this message to headquarters: contacted Living God, killed same."
"The Navy is ready for an immense amount of circumstances, there is next nothing that could take us by surprise to the point of needing that kind of firepower." Tarkin continued.
"Baron! Giant Amorphous Bantha Breakfast Biscuits have appeared on Gastrula!"
"Not again..." baron Orman Tagge said. "Was Gastrula in the list of banned planets?"
"Yes, my lord."
"Well, at least we won't get blamed this time. Now send in the ships with the blue sauce, and put a bounty on the idiot that brought Bantha Breakfast Biscuits there! And I want them alive!"
"Last time such a situation presented itself when Bantha Breakfast Biscuits at Bestine's Biscuit Baron became giant monsters and started devouring anything in sight forty years ago, and Tagge Company found an alternative way to clean their own mess before a Base Delta Zero fleet could be assembled." Tarkin continued. Then, seeing Thrawn's face, he added: "It's a long story, you can learn it in full in all public libraries. But now, tell me this: what in this galaxy could warrant the use of enough firepower to shatter a planet through its shield?"
"It's called the Mnggal-Mnggal." Thrawn replied. "The abomination infects people, takes them as hosts while consuming them in mind and body from the inside, and if not eradicated immediately can consume entire planets. The one law in the Unknown Regions that everyone follows is that any sighting of the Mnggal-Mnggal must cause an immediate cessation of hostilities until its infestation has been eradicated, even with the equivalent of a Base Delta Zero if necessary-and a planet killer would be useful to deal with the planets the abomination has surrounded with automated ships to defend itself, such as Mugg Fallow."
"I suppose the Death Star has a practical use, I guess." Tarkin admitted. He had not expected to actually find a second target worth its full power, let alone multiple.
Yes, this weird galaxy has a planet that is actually a genocidal extragalactic robot (whose species is directly responsible for the Yuuzhan Vong's madness) and at least two cases of biscuits mutating into kaijuus. Gotta love this franchise...