Irina Cartwright is a Shadowhunter.
Sometime after Alec and Magnus adopted a warlock child in 2010, Irina talked to Isabelle Lightwood after a Clave meeting and asked her when she would give her parents a "real" grandchild, claiming that Max did not count because he wasn't a Shadowhunter and believed that no one would, or should, give Alec and Magnus a Shadowhunter child. When the comment made Isabelle reach for her whip and Alec dragged her back, Irina muttered that the Lightwood kids were "out of control and out of [their] minds", to which Jace Herondale smiled and simply agreed.
At Robert Lightwood and Livvy Blackthorn's funeral in 2012, Irina came up to the grieving family and friends of Livia. She pitied them and pointed out that she thought that funerals were sad. When Irina didn't get the reaction she seemed to be hoping for, she left.
- City of Lost Souls (first mention)
- The Land I Lost (mentioned only)
- Queen of Air and Darkness (first appearance)