This is everyone's ages, so if you don't really care about this you can go ahead and continue with the story. 😉
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The Batfam's Ages (roughly):
Alfred - This shall remain a secret for all of eternity *evil laughter* This man does not get older, he's too awesome to age :D
Bruce Wayne - Batman - 42
Dick Grayson - Nightwing - 26
Jason Todd - Red Hood- 20
Danny Walker - 20
Tim Drake - Red Robin - 18
Damian Wayne - Robin - 14