Melody Cassandra Baker
human (?)

highschooler, dreams of being a child or criminal psychologist

Arden Mae Parnassus
pheonix

highschooler, wants to be philosophy professor

Dawn Elaine Price
reaper (human)

highschooler, planning to study biology (and assist a ferryman cause she's a reaper)

ECHO
robot

ECHO stands for Electronic Companion (to) Help (and) Observe

Aurora Rover
alien

essentially possessing this body, drives around the US, her age is entirely unclear

Stella Douglas
human

Pony Express © employee studying psychology, 21 years old

Opheila Diggory
human

Alterra © researcher and xenobiologist, has children 2 with her ex husband, 44 years old