Mwahaha, I'm so twisted. I've only played We Love Katamari, so if anything in this varies from the original, you may want to keep that in mind.
The Katamari Victims Support Group
A man, covered from head to toe in bandages staggered into a small room filled with similarly injured people. He dropped his crutches when he finally took a seat in front of the crowd.
"Hello, everybody," he said, feeling burning agony every time he uttered a word. "I think you know why I called you all here. We have been rolled over, battered, and eviscerated too many times! And we're the lucky ones! We've survived, and it's our turn to stop the Prince and King from abusing their powers!"
The crowd cheered, injuring several nerves in the process.
"I think we should sue them," one bandaged man suggested. He groaned.
"Perhaps," the leader responded. "Aggravated assault with a large ball of bushes and thumb tacks… yes, this might work."
Meanwhile, far away from the support group, the King of the Cosmos and the Prince were discussing why the latest katamari sucked and could have been so much bigger.
As the King blabbed on and on, the dozens of humans still flailing inside the mass of garbage prayed for their lives. They knew what happened to katamaris. It was a nightmarish fate.
While they were still inside, the colossal egotistical man would toss them into the night sky. The sphere would flash white before the contents melted together into a colorful form. The blood would all dissolve away, leaving only some damned rainbow-colored orb that would be given a "cute" name.
Disgusting.
But at least they'd be alive, in a way. Their physical forms would all be gone, but their minds lingered in the stars and planets. Knowing this, they began to calm down a bit.
"Oh, this is kind of big, but it's just nowhere good enough. Oh well, I can turn it into stardust!"
The shrieks of the people were silenced when the King clenched his hand into a fist, and only bits of white dust were seen floating in the dark sky.
"Isn't this a wonderful hobby?" he asked, oblivious to the horrific truth. "The planets are beautiful…" The giant was about to begin a monologue about roses, but thankfully, a swarm of half-dead men and women marched up to him. Well, the ones that could walk, anyway.
"MURDERER!" they shouted in unison, as if they were beatnik protesters. The energy required to shout that made quite a few of them drop dead in an instant. "The King is a murderer!"
"…murderer…" he said to himself, before realizing that 'murderer' wasn't a very positive word. "Wait—Are you starting a fight? I was a boxer, you know!"
The victims groaned. Wasn't being crushed over meters and meters of trash cans and small mammals enough? Enraged, they charged. Er, well, hopped. This was their change to finally get their vengeance on the King of the Cosmos. Joy overwhelmed them, so they never heard a vague rolling sound coming from behind them.
The Prince pushed his katamari (a flaming one, no less) into the King's view, immediately torching the already suffering people. The ball's gravity pulled them towards it, sticking them in place.
"Ooh, wonderful timing, Prince! I just had a desire to make more stardust!"