"Ah, yes, different timelines. Wait until you meet the different versions of the same people," Obi-Wan replied, crossing his arms as he spoke. "There are people here who have multiple versions of themselves because they've been taken from different points in their own timeline. Then there are different versions of the same person because they've been brought here from different timelines of their home's history. I think Captain Rogers has the most versions of himself; he's currently at six... yes, six. It's fascinating, really. This place is an excellent place to study temporal physics, theoretical or otherwise."
As he glanced round, he caught sight of the Spire, and turned to direct Luke's attention towards it. "There is a man who lives in that spire. People tend to blame him for the incidents that are more... Dark in nature. I don't believe he has a name, although he does appear to have a temperament somewhat akin to a sleep-deprived Gundark."