Aliana: Arrested after Team Flare is defeated. She would have gone free after not too much time (since prison sentences seem fairly short in the pokémon world), but due to being discovered trying to bribe guards and doing illicit deals with other inmates, her sentence was extended. After she goes free, she proves she hasn’t changed her ways by working for Team Mythic.
Bryony: Prior to Team Flare’s defeat, she has a one night stand with Lysandre which results in her becoming pregnant. Her sister, Mable, was the only other person who knew of this, and was the one to help Bryony escape when the police came to arrest most of the other Team Flare members. Bryony ends up having difficulty supporting herself and her son, Basile, due to having to lay low and avoid the law and the two move around a lot as she tries to find part time work. When Basile is about 9 years old, Bryony is finally caught when she was out looking for their dinner and she doesn’t tell the police about her son, fearing what would happen to him if they found out he was Lysandre’s son. Basile ends up living on the streets, not knowing what happened to his mother, for another 5 years before being taken in and later adopted by Clemont and Cilan. Bryony ends up with a harsher sentence for fleeing justice, and is still in prison.
Celosia: Dies when Lysandre uses the Ultimate Weapon and the base collapses. She came from a wealthy family and only joined Team Flare for fun. By the end of it all, she regretted joining and wanted to defect, but it was too late for her. Tried to escape at the end of it all but ends up crushed as the HQ collapses when she and Mable stay behind – Celosia trying to rescue some pokémon that had been left behind by the other fleeing Flare members. Her family tries to sue Lysandre Labs after the incident, but nothing comes of it since Celosia joined the Team and committed crimes of her own will.
Mable: Joined Team Flare with her younger sister Bryony. After her sister confided that she was pregnant with Lysandre’s child and was afraid what would happen if Team Flare was defeated, she helps Bryony escape the HQ not long before the weapon goes off. However, Mable herself stays behind to try and rescue Lysandre, wanting him to live so he can at least know he has a child, but she ends up crushed when Celosia asks her to help rescue some trapped pokémon on her way to the central chamber.
Xerosic: Originally from Ultra Megalopolis, he was stranded in the ‘main’ world after the wormhole creating technology he was testing, including his protective suit, broke. He joined Lysandre Labs to try and gain access to the tech required to rebuild a portal back home. When Team Flare is defeated, he works on his Expansion Suit project – the goal of it was to create a suit he could use to get back home once his portal was built. After he finishes his prison time (having turned himself in to Interpol), he finds out that there are other people from his home world in Alola and heads there. He eventually chooses to remain in Alola rather than move permanently back to Ultra Megalopolis and gets a job with Aether Foundation studying Ultra Space. Incidentally, he is also Zossie’s uncle.