The Turtles All the Way Down cast features Isabela Merced, Cree and Judy Reyes. This info article contains minor spoilers and cast/character summaries for Hannah Marks’ 2024 HBO Max movie. Check out more streaming guides in Vague Visages’ Know the Cast category, and then browse complete soundtrack song listings in the Soundtracks of Cinema section.

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Turtles All the Way Down chronicles the trials and tribulations of a 16-year-old girl. As Aza struggles with OCD, she develops a romantic bond with a male classmate. The narrative follows the main protagonist as she learns to understand her place in the world. Here’s every actor and character in Turtles All the Way Down, an adaptation of John Green’s 2017 novel.

Read More at VV — Know the Cast: ‘The Sympathizer’

Turtles All the Way Down Cast: Isabela Merced as Aza Holmes

Character Profile: A 16-year-old Indiana native. She struggles with OCD after her father’s death. Aza studies philosophy while suffering from an existential crisis.

Merced’s Resume: Isabel Reyes in Sicario: Day of the Soldado (2018), Lizzy in Instant Family (2018), Dora in Dora and the Lost City of Gold (2019), Rachel Cooper in Sweet Girl (2021), Cora Herrera in Father of the Bride (2022)

Read More at VV — Know the Cast: ‘Bookie’

Turtles All the Way Down Cast: Cree as Daisy

Character Profile: Aza’s best friend. She runs a popular Star Wars fan fiction publication. Daisy describes a character named “Ayala” as her “greatest burden.”

Cree’s Resume: Babe Carano in Game Shakers (2015-19), Babe Carano in Henry Danger (2017), Marisol Fuentes in Mr. Iglesias (2019-20), Mim in The Sleepover (2020), Emily Arlen in Big Sky (2022-23)

Read More at VV — Know the Cast & Characters: ‘Reality’

Turtles All the Way Down Cast: Judy Reyes as Gina

Character Profile: Aza’s mother. She is a widow who works as a teacher. Gina worries about failing Aza.

Reyes’ Resume: Nurse Carla Espinosa in Scrubs (2001-09), Zoila Diaz in Devious Maids (2013-16), Congresswoman Santos in The Circle (2017), Victoria Munoz in Smile (2022), Kim Verdi in Dr. Death (2023)

Read More at VV — Know the Cast & Characters: ‘White House Plumbers’

Turtles All the Way Down Cast: Felix Mallard as Davis

Character Profile: Aza’s childhood friend. He is the son of a missing billionaire. Davis helps Aza overcome her fears.

Mallard’s Resume: Ben Kirk/Ben Fitzgerald in Neighbours (2014-19), Cooper James in Happy Together (2018-19), Lucas Caravaggio in Locke & Key (2020-21), Roamer in All the Bright Places (2020), Marcus Baker in Ginny & Georgia (2021-)

Read More at VV — Know the Cast & Characters: ‘Love & Death’

The Turtles All the Way Down cast also includes:

• Maliq Johnson as Mychal
• Miles Ekhardt as Noah
• J. Smith-Cameron as Professor Abbott
• Poorna Jagannathan as Kira Singh
• Tim Gooch as Lyle
• Jason Kientz as Mark
• Hannah Marks as Holly
• Sheila Gray as Local Anchor
• Rico Romalus Parker as Evan
• Debby Ryan as Quinn

Q.V. Hough (@QVHough) is Vague Visages’ founding editor.