Mary was a modified human who served the Union as a member of its Assassination Squad where she was partnered with Jake. She was the first female modified human shown within the series as well as one of the two main antagonists of Volume 01. Mary was very intelligent, always strictly followed her missions, and was loyal to Dr. Crombel. She rarely displayed emotion and was usually taciturn, which frequently irritated Jake, her partner. Although she was often overshadowed by Jake's frequently outrageous actions due to her stoic, avoid-trouble-if-possible disposition, she had a very cold and contemptuous nature, and harbored arrogant superiority complex toward M-21 and 24, seeing them as unworthy "trash".

Noblesse (Manhwa)
Within an abandoned building in South Korea lies a white coffin, from which rises Cadis Etrama Di Raizel "Rai"—an unimaginably beautiful, dignified, and noble man. Awakening in this unknown time, Rai must seek out someone he can trust—his loyal companion, Frankenstein. To begin with, Rai attempts to blend into human society by transforming his old-fashioned clothing into the pristine blazer of the nearby Ye Ran High School. As it turns out, the principal of the school is his servant Frankenstein. After slumbering for the past 820 years, Rai requires Frankenstein's help to adapt to the current age, so Frankenstein enrolls him as a new student in order to help him understand modern society and experience a normal life. Frankenstein's plans, however, soon go awry not only because of the problems stemming from modern society, but also unresolved conflicts from him and his master's troubled past. Left with no other choice, Rai must resort to using his mysterious power to protect those he holds dear.

Noblesse
Within an abandoned building in South Korea lies a white coffin, from which rises Cadis Etrama Di Raizel "Rai"—an unimaginably beautiful, dignified, and noble man. Awakening in this unknown time, Rai must seek out someone he can trust—his loyal companion, Frankenstein. To begin with, Rai attempts to blend into human society by transforming his old-fashioned clothing into the pristine blazer of the nearby Ye Ran High School. As it turns out, the principal of the school is his servant Frankenstein. After slumbering for the past 820 years, Rai requires Frankenstein's help to adapt to the current age, so Frankenstein enrolls him as a new student in order to help him understand modern society and experience a normal life. Frankenstein's plans, however, soon go awry not only because of the problems stemming from modern society, but also unresolved conflicts from him and his master's troubled past. Left with no other choice, Rai must resort to using his mysterious power to protect those he holds dear.