Gilbert is like in his 50s, Finn is only 30, so of course the former looks way older.
Seteth doesn't look older than Thomas and yet he is
More seriously, Gilbert epitomizes the "old failure" of a knight, Finn's just a not that old failure of a knight who can become Gilbert like if you get Leif killed in Fe4 or if Leif accidently kills his sister.
I never checked Gilbert's age tbh, is he younger or older thanks Dorias?












