Nathalie Sancoeur (Miraculous: Tales of Ladybug & Cat Noir)

Nathalie Sancoeur, later known as Mayura and Catalyst in her akumatized form, is the secondary antagonist of Miraculous: Tales of Ladybug and Cat Noir. She is the assistant of Gabriel Agreste/Hawk Moth, who manages his mansion and takes care of his son Adrien Agreste/Cat Noir. However, she later decides to use the Peacock Miraculous to help Hawk Moth in his quest to steal Ladybug and Cat Noir's Miraculouses. She has a silent, reserved, stoic, and very diligent personality. Like Gabriel, she is enigmatic, graceful, formal, conflicted, cold, undemonstrative, cunning, ruthless, calculating, businesslike, dour, dangerous, unapproachable, very calm, collected, sincere, brilliant, charismatic, and manipulative, and loses her usual disposition when in battle as she goes berserk. However, despite this, she is able to pull both Gabriel and Adrien down to earth during some of their flightier moments.
She was voiced by Nathalie Homs in the original French version, and by Sabrina Weisz in the English dubbed version. 
== Role in the series ==
=== Pre-Series / Season 1 ===
Though Mayura herself was absent during this time, her civilian identity, Nathalie, was usually seen at the Agreste mansion alongside her boss Gabriel Agreste and Adrien's bodyguard.
=== Season 2 ===
In the episode "The Collector", it is revealed that Nathalie is aware that Gabriel Agreste is Hawk Moth when she asks the latter why he went after the book which Adrien had lost earlier if he already had another one, to which Gabriel answers that he had to hide his secret identity from Ladybug and Cat Noir.
In the episode "Catalyst (Heroes' Day - Part 1)", Nathalie helps Hawk Moth to get Ladybug and Cat Noir's Miraculouses by letting him akumatize her into Catalyst, a power-enhancing supervillain. Then Nathalie, as Catalyst, turns Hawk Moth into Scarlet Moth, boosting his powers so that he can create as many akumas as he wants.
Mayura makes her debut in the final episode with the same name "Mayura (Heroes' Day - Part 2)". After seeing that Ladybug and Cat Noir defeated Scarlet Moth and the scarlet akumatized villains, Catalyst becomes enraged. She takes the Peacock Miraculous and transforms herself into Mayura in order to help Hawk Moth. She then helps him escape the heroes. Later, a weak Nathalie is shown with the Peacock Miraculous alongside Gabriel Agreste.
=== Season 3 ===
She will appear in Season 3 as the main antagonist, demoting Hawk Moth to be the secondary antagonist.
In “Miracular”, She agrees to help Gabriel in convincing Chloe to join them. Unfortunately for the both of them, their plan failed when Chloe decided to stay on Ladybug’s side even when trying to manipulate her.
Category:2010s
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