Depends on the characters, really. It's mentioned that a lot of ex-Ultimates wind up going Extropian, because they were more in it for the ruthless self-promotion than the overhumanism. So... First, figure out why your character/NPC in question was attracted to/joined the Ultimates. This could be something like he had held out against hell in a situation where eventually the Ultimates were the relief force, and they were so impressed by this fucker's tenacity they took him home with him. Maybe she was scarred up by the Fall, and wanted to get tough and hard so she wouldn't be hurt up like that again. Maybe they were a family member or a friend of someone who became an Ultimate, and their Ultimate connection bought them out of cold storage/indenture and brought them to Xiphos thinking [i]of course[/i] my old buddy/son/whatever will be into this just like I am. You could have folks who were military survivors from the Fall; I imagine, say, an ex-SAS chap looking at his options and deciding (perhaps wrongly,) that the Ultimates are less warcrimes-tastic than Direct Action and Gorgon Defense Systems are too into civic security and sales for a bloke like them, and signing up with the Ultimates looking for a merc outfit, only to find terrifying fascists instead. Either way, figure out the reason they went to the Ultimates over the other options, and the reason why they decided to leave, and this will lead you to where they went after they parted ways with the Ultimates. If they were someone who was primarily motivated by personal or financial gain, and the "fuck everybody else's rules" aspects, and was less-than-thrilled with the overhumanism or the martial prowess aspects, they would probably wind up on some Extropian habitat or another. They might also wind up with one of the Sunward crime syndicates, like the LLA or the Triads. If they were an ex-military person looking for a place for an ex-military person to fit in, first answer the question: why didn't they go to Jupiter? Then answer: Why didn't they go to Titan? Then answer: Why didn't they join Direct Action? And now ask yourself, which of those is most appealing now that they've seen the true face of the Ultimates and found it not to their liking? If they're craving Americana (North or South) more than anything else, they'll probably head to Jupiter, but if they're looking for a place where they can feel like their skills are being put to genuinely good use in defense of their country, they'll probably head to Titan. If they just found the Ultimates to be insufficiently mercenary and to have too many esoteric and/or power-hungry agendas, they'll probably join Direct Action, or maybe try to found their own mercenary group. If they were something else, well... You still have the method, now: start with who they were, add in why they choose the Ultimates (assuming the choice was theirs, and wasn't a "no shit" choice like "go with the Ultimates or die when they pull out," or "my uncle just bought me out of slavery, I should probably try out this Ultimate lifestyle thing he wants me to look into,") season with [i]why[/i] they became disillusioned with the Ultimates, and from there, extrapolating their next move should be simple.