Alphard al-Shua

The series' most prominent villain, Alphard Alshua (アルファルド, Arufarudo) is an attractive young woman who is both the leader of a terrorist organization called Snake (蛇, Hebi?), which is responsible for both the Shinjuku and Shanghai terrorists attacks and Canaan's arch-enemy.

Background
Once Siam's apprentice and known as Canaan, she has since thrown away the identity and adopted her current name. Prior to the events of 428: Fūsa Sareta Shibuya de, Alphard, Sham and Canaan were hired to hijack an armored military train containing the Ua virus. During the assignment Alphard betrayed her teammates when it was revealed their client ordered her to kill all witnesses, including them. She shot Sham and left him to die while escaping with the virus. She appears easily capable of taking down Canaan even though the latter uses her synesthesia, reasoning that she is no longer manipulated by feelings (unlike Canaan). She carries a FN Five-seveN USG as a sidearm. She later fights Canaan on a train, and takes Maria and Yunyun hostage. Alphard then locks them two sections down witha time bomb set for seven minutes. Canaan apears and attacks Alphard. Alphard quickly overwhelms her and plays mind games until Yunyun dislodges the car with Maria in it, and it then is destroyed by the time bomb. Canaan then simply states Maria isn't dead and quickly gains control of the fight. Alphard attempts to escape from Canaan by climbing to the top of the train, but falls off. Canaan saves and, and she asks "What do I have to do to be free of Siam's ghost?" She catches a gun falling off the train and shoots her arm until it's severed, and thus, falls to her death. However, she is seen in the ending where she just wanders without her left arm. Canaan begins to put her hair up like Alphard's, and at the end, is told her next target is a "woman with one arm".