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SPOILER WARNING: Plot details follow. Caution is advised!

You are the squarest, most rule-abiding guy I know.

Aline about Sebastian, A Problem of Memory

Sebastian Verlac was an English Shadowhunter from the London Institute.

History[]

In 2016, Sebastian studied abroad, specifically at the Paris Institute in France.[1] There, he met Jonathan Morgenstern. He approached the boy, despite his monstrous appearance, and sat with him at a cafe. Charmed and envious,[2] Jonathan took Sebastian captive and went to New York with him. Sebastian was kept in Jonathan's closet while the latter took his identity.[3]

For a long time, Jonathan posed as him, and while his family feared that he was dead, they were eventually told that he was safe but was staying away from London. Six months after he went missing, his cousin Aline Penhallow came to the New York Institute, where Jonathan was keeping up a charade as him, the charming Englishman who helped Isabelle Lightwood recover from yin fen addiction and advised them how to slay the Greater Demon Azazel. To avoid suspicion, Jonathan demanded that Sebastian tell him everything there is to know about Aline, threatening her life if he didn't. Jonathan then told Aline that he wanted to stay in New York, giving him more time to pose as Sebastian. Shortly after, Sebastian managed to cut away from his restraints and escaped. Before he could approach Aline at the Institute, Jonathan caught up to him and killed him.[4]

Jonathan later brought back his corpse to the apartment he and Valentine were staying at and had abandoned after Jonathan was caught. As a precaution, they left his body with a possessing demon, which Isabelle, Clary, and Jace found. They paid their respects to him after finding him, and killed the demon that had possessed him when it almost attacked them. They promised to make Jonathan pay for what he did to all of them.[5]

Appearances[]

Season Two (2B) appearances: 3/20
Mea Maxima Culpa:
Form is only used
You Are Not Your Own:
Form is only used
Those of Demon Blood:
Absent
The Fair Folk:
Appears; eclipsed
A Problem of Memory:
Appears
Day of Atonement:
Form is only used
A Dark Reflection:
Form is only used
Awake, Arise, or...:
Form is only used
Hail and Farewell:
Appears as a corpse only
Beside Still Water:
Form is only used
Season Three appearances: 0/22
On Infernal Ground:
Form is only used
The Powers That Be:
Absent
What Lies Beneath:
Form is only used in an illusion
Thy Soul Instructed:
Absent
Stronger Than Heaven:
Absent
A Window Into an...:
Absent
Salt in the Wound:
Absent
A Heart of Darkness:
Absent
Familia Ante Omnia:
Absent
Erchomai:
Absent
Lost Souls:
Absent
Original Sin:
Mentioned only
Beati Bellicosi:
Absent
A Kiss From a Rose:
Absent
To the Night Children:
Mentioned only
Stay With Me:
Absent
Heavenly Fire:
Mentioned only
The Beast Within:
TBA
Aku Cinta Kamu:
TBA
City of Glass:
TBA
Alliance:
TBA
All Good Things...:
TBA

Trivia[]

  • While posing as Sebastian, Jonathan told Isabelle that he had been addicted to yin fen, which was why he apparently left London—to find his own ways of kicking the addiction—and found his way to New York. He also told her that Sebastian's mother—a stubborn and strong-willed woman—died when he was young, and that he forgave her despite having made his life miserable.[6] He also claimed to have specialized in Greater Demons studies at the Paris Institute.[7] Whether there is some truth to this in Sebastian's history is unknown.

The following are elements of the character's book (specifically City of Glass) counterpart that was not adapted or was changed for the series:

  • His book counterpart was from Paris.
  • Sebastian had black hair.
  • The Penhallows had not seen Sebastian in so long that they did not realize that the Sebastian they took in was an impostor; Jonathan only died his hair black to pose as him.

References[]

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