Note from forevermagik13: This chapter is mine, and I believe it answers flightfoot's question in-story. As for KKBeckett, I'm getting there in Pieces, promise.
"And because Riku killed Master Vexen, the Replica Program fell into Saix's hands. And once that happened, a lot of the Replicas started to rebel. Hence the lovely Rebellion. I'm here because 29 rebelled, but frankly, I like this side of things better…" Joseph was speaking rather quickly, trying to get all the important information out, because the sooner he explained the Rebellion to Vexen, the sooner Vexen would take him out to get ice-cream. Or, so he had been promised.
"How many Replicas have rebelled?" Vexen asked.
"Well, it's about," Joseph paused, counting the number of Vexen Replicas on his hands. He got to about six before he gave up. "Well, it's quite a few Vexens, then one Zexion Replica, two Sora Replicas, then a few random other replicas, then me. Oh, and I suppose you can count Riku too. Most people around here like to think he's kind of leading the rebellion—though he would rather think he was just helping out."
Vexen paused to feel proud about his Riku and Joseph rolled his eyes. Out of all the Vexens he had ever run into, this one was the strangest. Though, that might be because he was from a different universe.
"So, one Zexion Replica?" Vexen prodded, after he was done with his proud moment.
"He disabled the rest of them because they went to go work for Saix."
Vexen winced at the word 'disable', even though he wasn't actually affected by such an action.
"Sora Replicas?" he continued.
"Well, it's arguable whether they're part of the Rebellion or not, but since Roxas keeps stopping by even though Saix banned it, I count him as part of the Rebellion. And Xion has to be on our side, because if Saix found her, she'd be dead."
Vexen went back to scribbling hastily in his notebook.
"Can we please go get ice-cream now?" Joseph pleaded.
"Well, I suppose so," Vexen said, pocketing his notebook and pen. "I am out of questions for you regarding the Rebellion at the moment."
Joseph almost breathed a sigh of relief. Spending time with Vexen was tiring. It was almost like he had gone from being the one baby-sat, to being a baby-sitter.
However, just as Vexen and Joseph were going to head out, Number 29 and Riku came in. Joseph sighed, knowing his chances of getting ice-cream any time soon had just decreased significantly.
29 looked positively elated about something; Riku just looked mildly interested, yet slightly confused.
"I've figured out the time difference!" 29 exclaimed excitedly.
Joseph rolled his eyes. Ever since Vexen had showed up, 29 had had a lot more time on his hands to do other research since Joseph had been given the assignment of looking after Vexen—arguably the most time-consuming-keeping-a-person-out-of-trouble assignment ever. Therefore, 29 had time to do productive research and was often quite excited with his findings.
"Ooh," Vexen said. "And what were your findings?"
"Well, initially, we were led to believe that our universe is running behind yours, which, at the time that Edd mentioned it, it was true. However, it's not just running behind, it's running completely slower!"
Vexen's brow furrowed. "How did you figure this out?"
29 pulled out his research notebook and pointed to a timeline. "Riku has only been in this universe for six months. How long has it been since Riku disappeared in your universe?"
Vexen frowned, thinking. "Goodness," he mused. "Close to two years. Eighteen months at the least."
"Exactly!" 29 said. "We needed two points of reference. However, we only had one point of reference until you showed up."
"Why does this matter?" Joseph asked.
"You wouldn't understand," both 29 and Vexen said.
Joseph sighed.
"Who told you this universe was running behind?" Riku asked.
"Edd," 29 said. "Well, he didn't tell me, but he told Marluxia and Axel and them."
"And who is Edd?" Riku asked, still confused.
29 and Vexen looked shocked that Riku didn't know this. Joseph was just as confused as Riku.
"Edd is the man who brought you here," 29 said.
Riku's eyes widened. "Well then," he muttered. "I will have to thank him someday. Does anyone know where he is?"
The other shook their heads.
"Ice-cream?" Joseph asked.
"Go ask someone else to take you," Riku said.
"But Vexen promised…"
"It's true, I did," Vexen said. "However, all I have is munny. Is that your currency here?"
Riku and 29 both nodded.
"Right," Vexen said. "Well, I'm not sure where exactly where we are going, so lead the way."
"Yippee!" Joseph shouted, forming a dark corridor to Twilight Town.