It was the first Tekken title to receive an M (Mature) rating from the ESRB. Tekken's Nina Williams in Death By Degrees

Nina joins a fighting tournament on the "Amphitrite," a luxury cruise ship, to take down the organization Kometa and stop a potential superweapon.

Nina Williams is the lead character, chosen for her massive popularity within the Tekken community.

is a 2005 action-adventure spin-off from the Tekken series . Developed by Namco for the PlayStation 2, it centers on the franchise's iconic assassin, Nina Williams , as she infiltrates a criminal organization as an undercover CIA/MI6 "sweeper". 🕶️ Game Overview

Generally considered non-canon , though it provides significant backstory on the rivalry between Nina and her sister, Anna Williams.