City of Glass while he is impersonating Sebastian Verlac. He is portrayed by Will Tudor as Sebastian and Luke Baines in his true form in the television series. Family Jonathan is the birth child of Jocelyn Morgenstern (née Fairchild) and Valentine Morgenstern. He was experimented on by Valentine while Jocelyn was pregnant with him. When he was born, Jocelyn knew that something was wrong with the child and had to try very hard to be around him. He is Clary's brother, and has an unusual sexual attraction to her, freely kissing her in City of Glass and almost forcing himself on her in City of Lost Souls with Clary having to fight him off, repulsed by his actions. The Demoness Lilith also claims that Jonathan is her "son" due to the fact that it is her demon blood that flows through his veins. Love interests Clary Fray/Morgenstern/Fairchild: It is revealed in City of Glass that Sebastian/ Jonathan has an interest in Clary. Though Clary tries to push him away, he does not leave her alone. In City of Lost Souls Sebastian tries to rape Clary, and she almost kills him because of it, but does not because of the bond he and Jace Herondale shared at the time. The Seelie Queen: In City of Heavenly Fire Sebastian and the Seelie Queen become a pair for war purposes. The Seelie Court was helping Sebastian, so he hooked up with the Seelie Queen in hopes of getting closer to her. He marries her eventually, and she gave birth to a baby boy, Ash Morgenstern. He briefly appears in The Dark Artifices Lord of Shadows and Queen of Air and Darkness. Appearances in books City of Bones (mentioned) City of Ashes (mentioned) City of Glass City of Fallen Angels City of Lost Souls City of Heavenly Fire Tales from the Shadowhunter Academy (mentioned) A History of Notable Shadowhunters & Denizens of the Downworld Lady Midnight (mentioned) Queen of Air and Darkness Secondary characters Alaric Alaric was a werewolf and served as Third hand (soon second when Gretel died) to Luke in his werewolf pack. He later dies in the battle at Renwick's in City of Bones. Amatis Graymark Amatis Graymark is Luke's sister who resides in Alicante. She cared for Luke after their mother became an Iron Sister, married Stephen Herondale, and later joined Valentine's Circle. However, when Luke was bitten by a