The Gallifrey Lower Decks (my OCs) Ages and Regenerations
(these are going to have varying amounts of precision)
Dela is about 1100 years old and on her third body. She first regenerated very young and embarrassingly, she fell very unluckily down the stairs at the academy when she was 90. The other students made terrible fun of her and she ended up getting some revenge by using the rules and playing the system to a terrifying degree, which put her on the CIA's radar. Her first body was a boy and rather shy, her second had a more ruthless edge, which let her work her way into an influential position and figure out a fair bit of secrets (hence why she can fake higher security ratings. this Dela usually went by Ardela (longer part of her full name) and enjoyed hacking a lot). Her next regeneration was planned, and not that long ago, a few decades maybe. She's gentler again in this body, and much happier to work with people as people instead of as resources. She looks about 20
Patok is 900 and has regenerated once before at about 400. It was rather traumatic, a big accident or attack that involved a lot of guards. He woke up confused, not knowing who he is surrounded by other people in the same position, injured people and corpses. He hasn't changed much on first glance, neither in his appearance nor in his demeanor. But this Patok has a hardness the first did not. While he very much has fun most of the time, he knows when it's time to be serious. And he's got his priorities sorted: he will (and has done a lot) do pretty much anything to protect the president and gallifrey. He looks somewhere between 25 and 35.
Obnik is somewhere between 4000 and 5000 and on his fifth body. His bodies change a lot visually, but his character is very static. Most of his regenerations were planned, though at least one was the result of an explosion (presumably caused by Lanro. This has never been proven but everyone suspects). He looks about 40 right now
Rolenva is very young at about 250 and has been recruited only a short while ago. She's never regenerated before. She looks a little older than Dela but not much.
No one knows how old Lanro and Dolin are. They probably don't even know themselves. They're older than everyone else working at the CIA, that's for sure. Most people have seen at least one of them regenerate before, but if you added all of those up you'd get far more than thirteen lives for each, so the rumours of some weird experiments are very sticky. Lanro just shrugs if you ask them. Dolin doesn't say a word in response to that question. Lanro is a very fluid person the only thing that sticks between regenerations is their love of explosives and mischief. Their body is frequently missing limbs whether through accidents or inherently changes. They currently look middle-aged and don't have a right arm. Dolin's early bodies were women but at some point that changed and now they're all men. This current incarnation looks about 60, has short white hair and a very intense and strict appearance. He's blind in one eye.