Mary is a modified human working for the Union's Assassination Squad, where she partners with Jake. She was the first female modified human introduced in the series and one of the earliest antagonists readers encounter.
Created by Dr. Crombel, Mary ranks among his most successful and powerful experiments. Within the assassination unit, she's the stronger of the two operatives—a fact that translates to higher rank and command authority over Jake. Despite her quiet demeanor, she's intelligent and fiercely loyal to Crombel, though her emotional detachment tends to frustrate her partner. Cold and methodical, she executes her orders without hesitation.
Her combat abilities are formidable. Mary can transform her arms into devastating weapons, gaining explosive speed and strength in the process. She's strong enough that even Jake—who eventually vows to kill both her and Crombel—refuses to act until he's grown considerably stronger. He's genuinely afraid of her, which speaks volumes about where she sits in the power hierarchy.
When Mary eventually dies, the Union and DA-5 are visibly shaken. The fact that someone considered this powerful could be killed catches everyone off guard.
First Appearance: Chapter 30
Affiliation: Union
Occupation: Assassination Unit
Race: Modified Human
Content compiled by AnimeList.moe from publicly available sources.
