Because you like Donna Noble in Doctor Who
Basically a giant pillow come to life, Baymax is a medical robot created for the sole purpose of helping people. See them in Big Hero 6.
A believer in the pursuit of justice, Garrus Vakarian hates it when bad guys slip through the cracks of the bureaucratic justice system. See them in Mass Effect.
Smart but insecure, Tally Youngblood is torn between what she wants and what her society demands. See them in Uglies.
Betty Cooper seems like a sweet girl, but she also has a dark side and can go beyond what's safe or sane. See them in Archie Comics.
In a mad world, Caitlyn Kiramman is finding it hard to determine who to trust. See them in Arcane.
Empathetic Nausicaa embraces all forms of life, even those that might scare other people. See them in Nausicaa of the Valley of the Wind.
A kind and funny valedictorian, Gwen Stacy likes to make out with Spider-man when her homework's done. See them in Marvel Cinematic Universe.
Even the smallest person can change the course of the world, if he's brave enough. See them in The Lord of the Rings.
Cutting ties with her con-artist friends, Sarah Manning is creating a better life for her daughter by taking on the identity of the deceased Beth. See them in Orphan Black.
Clay Jensen's friend Hannah is gone, and he is determined to find out why even if that brings him pain. See them in Thirteen Reasons Why .
For Dana Scully, sometimes looking for extreme possibilities makes you blind to the probable explanation right in front of you. See them in The X-Files.