Melanie Walker, otherwise known as the criminal Ten, was the daughter of the leaders of the Royal Flush Gang.
Melanie returns in several issues of the Batman Beyond comic books, most notably #23. In the story, "Family Day", Melanie finds out that her brother quits his job she offered him before and crowns himself as King of the new Royal Flush Gang. Batman and Melanie eventually stop him, with some cooperation of the previous King, and her brother was sent back to prison.
- "Dead Man's Hand"
- "Once Burned"
- "King's Ransom"