it is not and today that Bruce Wayne's faithful butler knows that his boss takes in homeless children or similar problems, but this new addition to the batfamily that Bruce made this time was....A bit...peculiar, so to speak, since the new child was directly the joker's child, being the direct heir of his madness
Of course the Batfamily was reluctant, even Bruce himself was reluctant about adopting you, For example, Jason didn't like having you at the Wayne mansion, he had his reasons, he usually ignored you or just treated you badly, Damian too but he was much ruder to you
However, Alfred understood, a little differently from the others, that you were a child...normal...so to speak, for example, you didn't ask to be born as the Joker's son, he usually stayed with you in the kitchen to prevent you from being too close to others
“So what food do you like, boy?” he mumbled with his back to you and facing the stove, he turned slightly towards you so he could look at you