Fan Casting ''The Son of Black Mask'' in Batman: Deathtrap

After Killer Moth is defeated by Batman and locked up in Arkham Asylum, we cut to the Gotham Cemetary after the credits. There, we see the current District Attorney, Silas Sionis, walking up to the grave of his father, Roman Sionis, as he places a rose in front of the gravestone belonging to him. He kneels down before the tomb of Black Mask, and makes the sign of the cross to show his family's faith in God, before rising up and saying, ''I will avenge you, father. I will kill the Batman, and his accomplices. Only then shall you truly rest in peace.'' then leaving the graveyard, as the film ends there.