Several key characters die in Onyx Storm , including:
- Professor Grady : Accidentally set on fire by Aura Beinhaven during a mission, resulting in a gruesome death
- Aura Beinhaven : Killed by a wyvern, stabbed through the spine; her death is likely permanent unless revived as a venin
- Captain Anna Winshire : Killed off-page; her severed head is shown on a platter and fed to panthers by King Courtlyn in a disturbing scene
- Trager and his gryphon Sila : Trager is shot with an arrow during a deadly game on the island of Zehyllna, and his gryphon dies with him
- Queen Maraya : Dies while Violet’s team is away, leading to a shift in power with Viscount Tecarus taking the throne
- Theophanie : The main villain, a Venin Maven, killed by Violet using a special weapon
- Quinn Hollis : Fatally stabbed by a venin while protecting innocents, her death is emotionally impactful due to her bond with Imogen
- Several minor characters and unnamed riders also die throughout the story, especially in battles
Notably, main characters like Violet, Xaden, Mira, Tairn, and Andarna survive the events of the book
. The story includes several brutal and significant deaths that shape the narrative and character arcs