Tsukuri is a mercenary who fights with a sword, uses martial arts, and wears armor. She is very focused and professional in manner. When Aresia enacted her plan to kill off all of the world's men, Tsukuri supported her for unknown reasons. She appeared to be quite loyal to Aresia as well, but also practical in that she cut her losses and fled when it became clear the plan was not going to work. The reasons for her loyalty to Aresia, whether it was out of belief in her agenda or a mercenary's honor to fulfill her contract or some other reason was never explained.

She later joined the Legion of Doom for a time.