I was going to make them the child of the executioner since the wiki said there was supposed to be one, but after seeing the 1951 AiW (for the first time), I realized there isn't one. Instead, the knight cards do it themselves.

So now I'm thinking in the new timeline, the reader wants to follow in their parents' footsteps and become a knight just like them. They attend Auradon and assign themselves as Red's and Pink's bodyguard, much to Red's dismay.

The reader likes antagonizing Max, telling him that he's just like his father, that they will always be there for when he slips up, and that they can't wait for both Max and his father to share a cell.

Whereas in the old timeline, the reader never wanted to be a knight. They were ashamed that their parents were knights to such an evil tyrant. Maybe the reader was even an apprentice of Maddox.

More specifically, he saw him and reader being in a loving and committed relationship. Those relationships where you know it will last, where you know they will spend the rest of their lives loving and cherishing each other. A fairytale type of love.

The only problem is that in this new timeline, Reader is one of his greatest antagonists.

Think about it, Max mourning something that was never real for him, him feeling conflicted for falling for someone who could have been his soulmate but now has constantly reminded him he's his father's child, lovers to enemies to lovers again.