Do you have any fanfics where it’s about Alfred but he has to go on a mission kind of like how he did in the show Pennyworth but as and old guy and the batfam realize that they don’t know anything about him or how he’s more badass than even cass???
So I don't know any that match your descriptions exactly but I do have a few where Alfred is pretty badass, I think
Star Baker by SapphoIsBurning Alfred competes in a Baking show and helps get rid of a ghost all on the same day
Oh My- by incogneat_oh Someone attempted to carjack Alfred but it’s okay, he took care of it
Old Blood by lurkinglurkerwholurks Someone thought it'd be a good idea to kidnap Wayne's aged butler. It was not, in fact, a good idea Alfred is God by Seito Yj Cartoon Universe; Each member of the team gets to learn why Alfred is awesome, whether they want it or not. Alfred is the best there is. Young and a Menace by starknjarvis Alfred is de-aged to his MI-5 days and sorta freaks the batfam out Followers, please feel free to add on!