Hazel Grace Lancaster, the protagonist of "The Fault in Our Stars," is diagnosed with Stage IV lung cancer.

August Pullman, the protagonist of "Wonder," is born with Treacher Collins syndrome, a rare genetic disorder that affects the development of the face.

Maddy Whittier, the protagonist of "Everything, Everything," is a teenage girl who has severe combined immunodeficiency (SCID), a rare genetic disorder that prevents her from leaving her house.

Junior Polatkin, the protagonist of "The Absolutely True Diary of a Part-Time Indian," is a Native American teenager who has Tourette syndrome, a neurological disorder that causes involuntary tics.

Mia Hall, the protagonist of "If I Stay," is a teenage cellist who is in a coma after a car accident.

Melody Brooks, the protagonist of "Out of My Mind," is a teenage girl who has cerebral palsy, a neurological disorder that affects her movement and speech.

Starr Carter, the protagonist of "The Hate U Give," is a teenage girl who witnesses the police shooting of her unarmed friend, Khalil Harris.

Daniel Bae, the protagonist of "The Sun Is Also a Star," is a Korean-American teenager who has Asperger syndrome, a neurodevelopmental disorder that affects social interaction and communication.

Julia Reyes, the protagonist of "I Am Not Your Perfect Mexican Daughter," is a Mexican-American teenager who struggles with depression and anxiety.

Cameron Post, the protagonist of "The Miseducation of Cameron Post," is a teenage girl who is sent to a conversion therapy camp for being a lesbian.

Simon Spier, the protagonist of "Simon vs. the Homo Sapiens Agenda," is a gay teenager who is blackmailed for being gay.

Aristotle Mendoza, one of the protagonists of "Aristotle and Dante Discover the Secrets of the Universe," has autism spectrum disorder (ASD).

Luna, the protagonist of "The Girl Who Drank the Moon," has a magical gift that allows her to heal others.

Percy Jackson, the protagonist of "The Lightning Thief," has dyslexia and ADHD.

Katniss Everdeen, the protagonist of "The Hunger Games," is forced to compete in a televised fight to the death.