Fountain of Youth cast and character guide: Who plays whom in Guy Ritchie's latest adventure film?

Natalie Portman joins John Krasinski in the cast of Guy Ritchie's globe-trotting adventure film, Fountain of Youth. They play two siblings who rekindle their relationship as they try to find the mystical fountain that is supposed to grant them immortality. However, that comes with its own set of pitfalls. How does it look? Is it even real or just a part of mythical texts? The siblings ponder upon these queries throughout their journey. They are joined by Eiza González, Domhnall Gleeson, and Arian Moayed in the central roles.

Fountain of Youth drops on Apple TV+ on May 23, 2025, and promises an adventurous ride akin to Harrison Ford's Indiana Jones movies. So, it has seemingly fulfilled John Krasinski's lifelong dream.

"I played Indiana Jones for the first 24 years of my life. I pretended to be him as long as I could. This is the movie that I pretended to be in when I was a kid. So, to actually get to be in the movie that I pretended to be in is very surreal," Krasinski told Entertainment Weekly.

Natalie Portman also spoke with APNews about the film's family-friendly appeal.

“It’s so rare to get to make a movie that has this scale and this scope of adventure that you can watch with your kids. I’m always looking for something that I can enjoy with my children.”

Here is the central cast of Guy Ritchie's Fountain of Youth on Apple

1. John Krasinski as Luke Purdue

A still from Fountain of Youth (Image via YouTube/Apple TV)

John Krasinski leads the cast in Fountain of Youth as Luke Purdue, an art thief who grows apart from his sister. A while later, he reconnects with her to seek her help in finding the fountain. He hopes to use her smarts in the historical chapters to stand a better chance of finding this treasured element. Before appearing in this exciting heist project, John Krasinski was known for his performances in A Quiet Place and Jack Ryan. However, his most popular role is Jim Halpert in the US version of The Office.

2. Natalie Portman as Charlotte Purdue

Natalie Portman plays Luke's sister, who reluctantly joins her quest while going through a divorce from her husband. Luke hopes this heist can allow her to use her knowledge to explore the world much like their father. So, the adventure also becomes a way for her to bond with Luke. Before stepping into this world, Natalie Portman has also dabbled in Star Wars and the Marvel universe. She has received an Oscar for her performance in Black Swan (2011).

3. Domhnall Gleeson as Owen Carver

Domhnall Gleeson plays Owen Carver, a wealthy man who enlists Luke for a mission. He realizes Luke and his team's reputation in the art world and believes they can help him reach the mystical fountain. Gleeson is an Irish actor whose work in About Time (2013), Ex Machina (2014), and Brooklyn (2015) has been widely praised. He is now supposed to star in a follow-up series to the US version of The Office.

4. Eiza González as Esme

Eiza González stars as Esme, a woman who crosses paths with Luke during his heist. Luke has a crush on her even though she stands between him and his goal to find the fountain. González has also been in another Guy Ritchie film, 2024's The Ministry of Ungentlemanly Warfare. She is known for her work in Baby Driver (2017), Godzilla vs. Kong (2021), and the Netflix series 3 Body Problem.