|First Appearance||A Lesson in Pain, chapter 1|
Maria Seinfeld[Born August 6th 1944] was a SCORPIA member who first appeared in A Lesson in Pain.
She was SCORPIA's resident expert on neurotoxins. She was also a emotionless woman who showed no remorse in what she did. She was also in her late 60s Early 70s when she first met Alex Rider. she is killed when the needle with neurotoxin she has in her hand slips and accidentally pokes her causing her to suffocate.