Stephanie Chiu
- "I patch you guys up, and I grow Emmett's weed, but mostly, I'm just here to fight against Abstergo. No one should be allowed to ruin lives like that."
- ―Stephanie Chiu, 2014.[src]

Doctor Stephanie Chiu is a member of the Assassin Order stationed aboard the Altair II. She serves as the ship's medical officer.
Biography
Born to a couple of pharmacologists in Beijing, Stephanie's life was planned out carefully by her parents, with their aim being to have her study hard, qualify as a doctor and work in their family business; through this plan, Stephanie was sent to an Abstergo-funded university, where she gained degrees in medicine, biological and chemical engineering, and a post-doctoral fellowship in membrane technology. However, seeing her family's intention to work alongside them as boring, and considering other options, Stephanie deviated in her studies to research information security and network science, viewing Abstergo's work as a good idea and their greater abundance of openings in advanced technology.
This all changed when Stephanie discovered that her father was responsible for the creation of New Fluoride. Noticing its ill effects on people all over China and how Abstergo had never been apprehended for New Fluoride's distribution in her home country, she fled to Hong Kong. Chased by Abstergo all the way, Stephanie eventually came across Gavin Banks and Susan Drayton, to which she joined them aboard the Altair II and had been with them ever since.
When the Altair II arrived in Osaka, Japan in December 2013 to search for the Assassin cell in the city, Stephanie participated in the hunt for information on the Onmoraki-Gumi, a branch of the yakuza suspected of attacking the cell. On 13 December, she discovered a tweet that suggested that the leader of the Onmoraki-Gumi was a castrated ex-porn star.
On 23 December, Stephanie changed the bandages on Emmanuel Barraza's hand, which had been impaled by the Hidden Blade of Kiyoshi Takakura during a misunderstanding. Gavin complained that she was making a fuss over Emmanuel's wounds while he had been left to tend to his own, but Stephanie told him that he was the one who had picked a fight with a trained yakuza Assassin half his age.
On 31 December, Stephanie traveled to Tokyo with the rest of the crew. She went with Emmanuel and Kiyoshi to a karaoke bar, where she filmed Emmanuel singing on her phone, which caused him to threaten to break his vow never to kill again if she ever showed it to someone.
Reference