just some basic info, trying to give away as little spoilers as possible considering how many I've already given away

main:

Full name: Nina Adeline Jason
Pronouns: She/her
Date of birth: February 11th, 2000
Age in book: 20
Sexuality: Bisexual
White, brunette, blue eyes

Full name: Hailey Jodie Robinson
Pronouns: She/her
Date of birth: June 23rd, 2004
Age in book: 16
Sexuality: Lesbian
White, blonde, blue eyes

Full name: Scarlett Selena Howard
Pronouns: She/her
Date of birth: January 1st, 2008
Age in book: 12-13
Sexuality: Lesbian
White, redhead, blue eyes
Has a shellfish allergy

Full name: Ophelia Callie Perry
Pronouns: She/her
Date of birth: March 28th, 2002
Age in book: 18
Sexuality: Lesbian
Mixed (black presenting), black hair with a light blue ombre, brown eyes

Full name: Leila Amira Mina
Pronouns: She/her
Date of birth: May 7th, 2006
Age in book: 14
Sexuality: Lesbian
Arabic, dark brown hair, brown eyes

Full name: Daisy Chen Ling
Pronouns: She/her
Date of birth: April 16th, 2002
Age in book: 18
Sexuality: Lesbian
Chinese, jet black hair, brown eyes

antagonist:

Full name: Elias Harrison Woods
Pronouns: He/him
Date of birth: August 20th, 1961
Age in book: 59
Sexuality: Straight
African American, black hair, brown eyes

side:

Full name: Eliza Jane Georges (nee Brandon)
Pronouns: She/her
Date of birth: November 25th, 1970
Age in book: 50
Sexuality: Bisexual
White, brunette, blue eyes

Full name: Joanna Natasha Oswald (nee Stevens)
Pronouns: She/her
Date of birth: January 4th, 1970
Age in book: 50-51
Sexuality: Heteroflexible
White, brunette, hazel eyes

Full name: Samuel Miles Georges
Pronouns: He/him
Date of birth: July 30th, 1970
Age in book: 50
Sexuality: Straight asexual
White, blonde, green eyes

Full name: Ethan Dante Oswald
Pronouns: He/him
Date of birth: March 2nd, 1970
Age in book: 50
Sexuality: Straight
African American, black hair, brown eyes

Full name: Rachel Alison Nathan
Pronouns: She/her
Date of birth: December 3rd, 1968
Age in book: 52
Sexuality: Lesbian
White, redhead, green eyes

Full name: Briana Mindy York
Pronouns: She/her
Date of birth: January 30th, 1972
Age in book: 47-48 (I might be doing my math wrong idk)
Sexuality: Pansexual
White, blonde, green eyes

Lucy Liana Fields
Pronouns: She/they
Date of birth: June 15th, 2003
Age in book: 17
Sexuality: Lesbian
White, blonde, blue eyes

Full name: Karen Hannah Keagen
Pronouns: She/her
Date of birth: February 21st, 2001
Age in book: 19
Sexuality: Lesbian
White, blonde, Heterochromia (brown and blue eyes)

Full name: Charlotte Marie Jones
Pronouns: She/they
Date of birth: January 7th, 2008
Age in book: 12-13
Sexuality: Lesbian
White, blonde, blue-ish green eyes

Full name: Kylie Elizabeth Lewis
Pronouns: She/they
Date of birth: August 20th, 2009
Age in book: 11
Sexuality: Pansexual
African American, dark brown hair, brown eyes