Here’s the core answer: the main cast of Percy Jackson and the Olympians includes Walker Scobell as Percy Jackson, Leah Sava Jeffries as Annabeth Chase, and Aryan Simhadri as Grover Underwood. Season 2 adds new key faces like Daniel Diemer (Tyson), Tamara Smart (Thalia Grace), Andra Day (Athena), and Courtney B. Vance stepping in as Zeus. Upcoming Season 3 expands the lineup with big names such as Dafne Keen (Artemis), Saara Chaudry (Zoë Nightshade), Kate McKinnon (Aphrodite), and the di Angelo siblings—Nico and Bianca.
Main Cast Overview
The heart of the story is driven by three young actors who bring Percy’s world to life:
- Walker Scobell as Percy Jackson – the impulsive, brave, and water-connected demigod son of Poseidon .
- Leah Sava Jeffries as Annabeth Chase – daughter of Athena, wise beyond her years, and Percy’s steadfast companion .
- Aryan Simhadri as Grover Underwood – Percy’s loyal satyr protector with a heart of gold (literally) .
These three were cast early in production—Scobell in January 2022, followed soon by Jeffries and Simhadri .
Season 1 and Recurring Characters
Season 1, based on The Lightning Thief, introduced several notable characters:
- Megan Mullally as Alecto/Mrs. Dodds, Percy’s gruesome math teacher who’s secretly a Fury .
- Virginia Kull as Sally Jackson, Percy’s caring, strong-willed mother .
- Glynn Turman as Chiron/Mr. Brunner, wise centaur mentor at Camp Half-Blood .
- Timm Sharp as Gabe Ugliano, Sally’s awkward and somewhat softened husband .
Gods and mythic beings also join the fray:
- Toby Stephens as Poseidon, Percy’s father and sea god .
- Jay Duplass as Hades and Travis Woloshyn as Charon .
- Lance Reddick as Zeus made a commanding presence in Season 1 before his passing .
Season 2 Highlights and New Additions
Season 2 of the series, based on The Sea of Monsters and released December 10, 2025, brings several new characters and surprises:
- Daniel Diemer as Tyson, Percy’s gentle Cyclops half‑brother .
- Tamara Smart as Thalia Grace, daughter of Zeus and Protector of Camp Half-Blood .
- Andra Day as Athena, wise goddess and Annabeth’s mother .
- Courtney B. Vance as Zeus, taking over from the late Lance Reddick .
- Timothy Simons as Tantalus, an undead demigod cursed with endless hunger and thirst .
Other returning and new faces include the three Gray Sisters—Kristen Schaal, Margaret Cho, Sandra Bernhard—who operate a spooky NYC taxi , and a host of formidable monsters like the Laestrygonians and characters like Clarisse La Rue (Dior Goodjohn) and Luke Castellan (Charlie Bushnell) .
Season 3 Casting Buzz
With Season 2 completed and Season 3 confirmed, anticipation is high. The third season adapts The Titan’s Curse and introduces several fan favorites:
- Dafne Keen as Artemis, the moon goddess and leader of the Hunters .
- Saara Chaudry as Zoë Nightshade, Artemis’ dedicated lieutenant .
- Kate McKinnon as Aphrodite, the iconic goddess of love and beauty .
- Levi Chrisopulos and Olive Abercrombie as Nico and Bianca di Angelo, siblings central to the story arc .
Series creator Rick Riordan has teased more—like Atlas and key scenes (Hoover Dam, anyone?)—so expect the ensemble to grow in audacious ways .
Expert Voices
“Finding someone to step into this role going forward was not an easy task, but when icon Courtney B. Vance answered the call, we knew the Gods were listening.” — executive producer Dan Shotz on Vance joining as Zeus .
There’s a lovely, human layer behind some casting choices too. Tamara Smart was recommended by Stephanie Reddick (Lance Reddick’s widow), who’d been her mentor—adding both legacy and emotional depth to the role of Thalia .
How It All Fits Together
This cast guide reflects how the show balances faithful adaptation with thoughtful updates. The original trilogy of Percy, Annabeth, and Grover stays firm. Season 1 grounded the mythology. Season 2 ratcheted up stakes, introduced meaningful new characters, and honored legacy (like Vance replacing Reddick, and casting through mentorship). Season 3 is now poised to bring more mythological complexity—and beloved book characters—to life.
Conclusion
Percy Jackson and the Olympians weaves a rich tapestry of familiar and new faces. Walker Scobell, Leah Sava Jeffries, and Aryan Simhadri anchor the story, while Seasons 2 and 3 expand the pantheon with Daniel Diemer, Tamara Smart, Andra Day, Courtney B. Vance, Dafne Keen, Saara Chaudry, Kate McKinnon, and the di Angelo siblings. Casting choices often carry emotional weight or fan resonance. All told, the show’s evolving ensemble underscores its commitment to honoring Rick Riordan’s world with depth, heart, and a dash of unpredictability.
Let’s see where Olympus—and Camp Half-Blood—take us next.
