A son of Frey, Norse god of summer, who dies on his sixteenth birthday and wakes up in Valhalla. Annabeth Chase's cousin. His voice - wry, self-deprecating, and unexpectedly thoughtful - distinguishes him from every other Riordanverse narrator.

A child of Loki with the ability to shapeshift between human forms and a gender identity that shifts accordingly. Alex uses he/him or she/her pronouns depending on the day. Prickly, lethal with a garrote, and one of the most distinctive characters Riordan has written.

A dwarf and son of Freya with an extraordinary gift for fashion and craftsmanship. One of Magnus's two companions from his mortal life. His sense of style and his skill with materials are not separate things - he makes weapons and armour of genuine power.

An elf and one of Magnus's two companions from his mortal life. Deaf, communicates in sign language. A rune magic practitioner of exceptional talent from a family that considered his deafness a source of shame.

A Valkyrie and daughter of Loki who is trying to keep her two worlds - Norse mythology and her devout Muslim family - from colliding. One of the most grounded and admirable characters in the series.