Nyssa Raatko (Earth-4678)

"Good. The loyalists will scatter. And I'll be true to my word. The League has no business in Gotham from now on."

- Nyssa Raatko

Nyssa Raatko is the estranged daughter of Ra's al Ghul and the younger sister of Talia al Ghul. After Ra's al Ghul's latest death in Arkham City, Nyssa would lead a rebellion against her father and those loyal to him so that she could take control of the League of Assassins.

Source

 * https://arkhamcity.fandom.com/wiki/Nyssa_Raatko