AU Idea/Prediction
For one magic reason or another, Abaddon's body starts aging like a normal human. No one knows at first, but after a while little things start to happen, his clothes get a bit tighter and more constricting, he gets a little taller, his hair gets a few inches longer, it's a little harder for him to fit in the vents,
eventually they realize and start trying to adjust (especially Abaddon), they take him shopping for new clothes, they make a wall chart to keep track of everyone's hight, Abaddon is pleased about not needing to have a car seat anymore, Katherine insists on teaching him to take care of his own hygiene, Nathan teaching both him and Ben how to shave, Abaddon has to start being more discreet about terrorizing the townspeople so he doesn't get arrested, Katherine and Nathan having to deal with a moody teenage abaddon
Abaddon has been the exact same for 300 years (+ living the history of the earth 100 times). He has to adjust to
Getting Taller
His hair getting longer
New clothes
his face and body changing
Puberty
The realization that "the vessel" is no longer just a vessel, it's his body now
The prospect that since he's able to age, he might be able to die someday
The fact he's slowly starting to look more and more like the priest
The only saving grace is that he's now able to "grow up" with Esther and Ben













