Finn (FN-2187) was born in 11 ABY.
Finn, formerly designated FN-2187 ("Eight-Seven"), was a stormtrooper who served the First Order until his desertion and subsequent defection to the Resistance during the First Order/Resistance War. Though trained since birth to be a loyal and obedient soldier, FN-2187's conscience conflicted with the methods of the First Order. For a time he was unwilling to support the Resistance, hoping to escape the galactic conflict instead of fighting for a cause he believed was doomed to fail. As the galaxy became consumed by war, the renegade trooper was ultimately forced to decide where his true loyalties lay.
You can see Finn in:
- Episode VII: The Force Awakens, 34 ABY (23 years old)
- Episode VIII: The Last Jedi, 34 ABY (23 years old)
- Galaxy's Edge, 34 ABY (23 years old)
- Episode IX: The Rise of Skywalker, 35 ABY (24 years old)