Gertrude Robinson

Gertrude, or Maximillian, Robinson was the former Archivist of the Magma Institute.

Personality
Gertrude is cruel, but only because Leitner broke up with her and she is too old for a relationship.

Descriptions
Gertrude was infertile, which makes her borderline inhuman.

Pre-canon
Gertrude, Elias, and Peter were in a love triangle that ended with Elias and Gertrude ending up together. Gertrude and Elias get married but divorce later on. Gertrude and Leitner meet over a misunderstanding where she attacks him. Elias makes a deal with the Eye to heal her infertility, but she cheat on him and gets with Leitner. She, Leitner, and Dekker also have another love triangle. She and Leitner used to go on romantic escapades together. She has a son, which is revealed to be Jonathan Sims. Agnes flirts with her, but she hates Agnes due to the fact that she is a femme fatale. Elias kills her because he thinks that she is seducing his girlfriend.

Elias Bouchard
Gertrude, Elias, and Peter were in a love triangle that ended with Gertrude and Elias getting together. Gertrude and Elias used to be married. Elias makes a deal with the Eye to heal her infertility, but she cheat on him and gets with Leitner. It is implied that she sleeps with Elias since it was thought at one point that John might be his son. He kills her because he thinks that she is seducing his girlfriend.

Jurgen Leitner
Gertrude and Jurgen Leitner used to run away for romantic escapades, this is mentioned by Leitner in Episode 80. He it is implied that she sleeps with him at some point since he is John's father. He, Gertrude and Dekker were in a love triangle.

Agnus Montague
Gertrude and Agnes flirt before Agnes falls in love with Jack and becomes good and straight. Gertrude also hates Agnes because she's a femme fatale and attracts a lot of men.

Jonathan Sims
Gertrude is revealed to be John's mother, with either Leitner or Bouchard being his father.

Adelard Dekker
Gertrude, Dekker and Leitner were in a love triangle.

Peter Lukas
Gertrude, Elias, and Peter were in a love triangle that ended with Elias and Gertrude getting together.