The Riordan Series is a fan-dubbed series of books created by Rick Riordan involving ancient mythology and legends. They include Percy Jackson and the Olympians; The Heroes of Olympus; Magnus Chase and the Gods of Asgard; and The Kane Chronicles.
Before the series Edit
- Maria di Angelo - Died in a hotel explosion caused by Zeus, which was intended to kill Nico and Bianca di Angelo.
- Laura Jackson - Died in a plane crash.
- Jim Jackson - Died in a plane crash.
- Rich Jackson - Died from cancer.
- The Oracle's Host - Died over thirty years before The Lightning Thief and became mummified after Hades cursed her.
- Grover's Uncle Ferdinand - Died after being turned to stone by Medusa.
- Beryl Grace - Died in a car crash caused by her being drunk.
- Esperanza Valdez - Killed in a fire in her workshop which was caused by Gaea, who later made Leo believe that he himself had caused the fire.
- Marie Levesque - Killed when Alcyoneus almost rose.
- Hazel Levesque - Killed when Alcyoneus almost rose by forcing the cavern she was in to collapse on her, suffocating to death from being trapped in oil. She was brought back to life by Nico di Angelo.
- Michael Varus and his group from Camp Jupiter are defeated in Alaska.
- Sammy Valdez - Died of old age.
- Various demigod children of Athena who were searching for the Athena Parthenos. Some were killed by:
Killed by knife or flame by the followers of Mithras.
Killed by Otis and Ephialtes.
Or killed by Arachne's traps.
- Cottus - Faded away.
- Gyges - Faded away.
- Various Satyrs while looking for Pan.
- Mr. McCaffrey - Killed by Nero so he could take his daughter as his own.
- Walt Stone's Father - Died of the Curse of Akhenaten.
- Ruby Kane - Burned herself up using her life force to seal Apophis' prison.
- Balder - Killed by Hod who was tricked by Loki to throw a mistletoe, which was the only thing he was vulnerable to.