|Portrayed by Nicola Correia Damude|
Head of the New York Institute
|“||Life is not about what you want to do, it's about what must be done.||”|
–Maryse chastising the young Shadowhunters at the Institute, Moo Shu to Go
When Clary Fairchild, the daughter of Jocelyn and Valentine Morgenstern, was brought to the Institute, Maryse and Robert were at Idris. Their children, whom they left partly in charge of the Institute, undertook missions which were unsanctioned by the Clave on Clary's behalf, which were eventually reported to them at Idris.
Maryse eventually returned to the Institute, while Robert took a side-trip to Mumbai to pick up Max. As the Seelies, particularly its queen, had stopped communicating with the Clave, it became enough cause for concern that Maryse sent Jace with Isabelle to talk to their source among the Seelies, Meliorn, but not before accusing Isabelle of potentially telling Meliorn anything that could have offended them. Supposedly disappointed in Alec's lack of control during her absence, she tasked him with looking after Clary.
After Valentine took the Mortal Cup and Jace, Lydia was replaced by another Clave representative, Victor Aldertree. Lydia suspected that Maryse had gone to the Clave behind her back. Throughout the initial search for Jace, Maryse helped Victor, consequently clashing with her own children. Maryse returned to Idris afterwards.
During their stay in Idris, Maryse and Robert's fights became more frequent. For Max's Rune Ceremony, she and Max returned to New York. She reconciled with Jace and admitted to him and Alec that Robert was having an affair.
Described as hard-as-nails, Maryse is a very hard woman to please. She is by-the-book and always looking down on faults—traits that she passed on to her eldest son, Alec. She is disapproving of Downworlders and doesn't have much time for them and their issues and is disapproving of her children's connections with them.
As the head of the New York Institute, Maryse is feared and greatly respected. As a mother, she loves her four children but, while showing the occasional open affection towards them—except Isabelle—she is first and foremost their superior and demands respect and quasi-perfect behavior at all times.
|Season One appearances: 5/13|
|The Mortal Cup:|
|The Descent Into Hell Isn't Easy:|
|Dead Man's Party:|
|Moo Shu to Go:|
|Of Men and Angels:|
|This World Inverted:|
|Blood Calls To Blood:|
|Season Two appearances: 2/20|
|This Guilty Blood:|
|A Door Into the Dark:|
|Day of Wrath:|
|Dust and Shadows:|
|How Are Thou Fallen:|
|Love is a Devil:|
|Bound By Blood:|
|By the Light of Dawn:|
|Mea Maxima Culpa:|
|You Are Not Your Own:|
|Those of Demon Blood:|
|The Fair Folk:|
|Day of Atonement:|
- Robert proposed to her in Barcelona.