Main characters
Book
Roman to Greek Gods
Random characters
100

This person is a son of Poseidon (it's not Percy)

Tyson

100

Who the hells Jason

The Lost Hero

100

Mars

Ares

100

my little babies who are children of Apollo

Kayla and Ausin

200

We meet this character when they are not a person

Thalia
200

Lester is the main character of this series 

Trials of Apollo

200

Mercury 

Hermes

200

The legit love of my life

Connor

300

THE mother

Sally

300

"Don't walk on my roof."

Sea of Monsters

300

Juno

Hera

300

Explosion

Beckendorf or whatever

400

Percy's sibling (Not Tyson)

Estelle

400

Child predator meets child

Blood of Olympus/HoO

400

Vulcan

Hephaestus 

400

Kills stuffed Animals

Octavian

500

Was accused of being a witch

Hazel

500

Norse Mythology books and the main character is Annabeth's cousin

Magnus Chase

500

Minerva

 Aethan 

500

Kill Kill Kill he has no friends but if he did they'd call him ...

Lit