7 Shocking Cast Updates For Percy Jackson And The Olympians Season 2: Recasts, New Gods, And The Mystery Demigod

The world of the demigods is expanding, and the casting news for Percy Jackson and the Olympians Season 2 is the most explosive update fans have received in months. As of this December 2025 update, the core trio is confirmed to return, but the new additions and a few surprising recasts are setting the stage for a dramatic adaptation of the second book, The Sea of Monsters. This is not the old movie franchise; this is the definitive, Rick Riordan-approved Disney+ series, and the casting choices for gods, monsters, and new heroes are already generating massive buzz.

The anticipation for the next chapter is palpable, especially with Season 2 expected to premiere in late 2025 and Season 3 already greenlit and scheduled to begin filming in August 2025. The new cast members bring serious acting chops and a fresh energy to the beloved characters, promising a faithful yet innovative take on Percy's journey to save Camp Half-Blood.

The Returning Core Trio: Full Biography & Notable Roles

The heart of the Percy Jackson and the Olympians series lies in its three young heroes. Their chemistry and commitment to the roles have been praised by author Rick Riordan and fans alike. Here is a look at the biographical profiles of the returning demigods and satyr.

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Walker Scobell (Percy Jackson)

• Full Name: Walker Scobell
• Born: 2009 (Approximate Age: 16 as of late 2025)
• Birthplace: Virginia, USA
• Notable Roles: Scobell made his professional debut and gained immediate global recognition for his role as the younger version of Ryan Reynolds' character in the Netflix sci-fi film The Adam Project (2022). He also starred as Charlie Kincaid in the superhero film Secret Headquarters (2022). His casting as the titular son of Poseidon, Percy Jackson, cemented his status as a major rising star.

Leah Sava Jeffries (Annabeth Chase)

• Full Name: Leah Sava Jeffries
• Born: September 25, 2009 (Approximate Age: 16 as of late 2025)
• Birthplace: Detroit, Michigan, USA
• Notable Roles: Jeffries began her career in local commercials at a very young age. Her acting debut was as Lola in the musical drama series Empire (2015). She is also known for her role as Norah in the feature film Beast (2022), starring alongside Idris Elba. Her portrayal of the intelligent daughter of Athena, Annabeth Chase, has been a central and celebrated element of the Disney+ series.

Aryan Simhadri (Grover Underwood)

• Full Name: Aryan Simhadri
• Born: 2006 (Approximate Age: 19 as of late 2025)
• Notable Roles: Simhadri is an Indian-American actor and voice actor. He is widely known for his breakout role as Rohan in the Disney Channel original movie Spin (2021). He has also lent his voice to various animated projects and appeared in shows like Angie Tribeca and SEAL Team. He brings heart and humor to the role of Grover Underwood, Percy's best friend and a satyr sworn to protect him.

Major Recasts and Key New Characters for The Sea of Monsters (Season 2)

The second season, adapting the beloved novel The Sea of Monsters, introduces some of the most pivotal characters in the entire saga. It also features a few significant recasting announcements that have dominated fan discussions, particularly due to the sensitive nature of one change.

1. The New King of the Gods: Courtney B. Vance as Zeus

Following the tragic passing of actor Lance Reddick, who brilliantly portrayed Zeus in Season 1, the role of the King of the Gods has been recast. The new actor is the Emmy and Tony Award-winning veteran, Courtney B. Vance.

Vance is known for his powerful roles in projects like The People v. O. J. Simpson: American Crime Story and Lovecraft Country. His casting ensures that the gravitas and authority of Zeus remain intact for Season 2 and beyond, honoring the legacy of his predecessor.

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2. Percy's Cyclops Half-Brother: Daniel Diemer as Tyson

One of the most anticipated new characters is Tyson, Percy's affectionate, one-eyed half-brother and son of Poseidon. The role will be played by Daniel Diemer, an actor known for his work in the Netflix series The Half of It.

Tyson’s introduction is a massive emotional and plot point for The Sea of Monsters, and Diemer's casting has been met with excitement. The character is crucial for Percy's development and the quest to find the Golden Fleece.

3. The Cursed Camp Director: Timothy Simons as Tantalus

With Mr. D (Dionysus) temporarily absent, Camp Half-Blood gets a new, highly unpleasant activities director: Tantalus. This eternally hungry spirit from the Fields of Punishment is played by Timothy Simons.

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Simons is instantly recognizable to many as the ruthless political aide Jonah Ryan from the HBO comedy series Veep. His background in sharp, comedic villainy makes him a perfect, and darkly humorous, choice to portray the cursed Tantalus.

4. The Key Demigod Recast: Kevin Chacon as Chris Rodriguez

A smaller but significant casting change for Season 2 involves the demigod Chris Rodriguez, a son of Hermes who plays a larger role in the events of The Sea of Monsters. The character was originally played by Andrew Alvarez in Season 1, but the role has been recast with Kevin Chacon.

The showrunners clarified that while Alvarez appeared briefly in Season 1, Chacon is taking over the role for his more substantial storyline in the second season, which includes his dramatic discovery by Clarisse La Rue. This change is considered a creative decision to better fit the expanded role.

The Future of Casting: Season 3 Rumors and New Entities

The success of the Disney+ series has already secured its future, with a third season confirmed to adapt the third book, The Titan's Curse. This confirmation brings an entirely new wave of casting speculation and excitement for fan-favorite characters.

5. The Hunt for Nico di Angelo and Thalia Grace

While Season 2 introduces Tyson, the focus for Season 3 will shift to the children of Hades and Zeus. Fans are eagerly awaiting the casting announcement for Nico di Angelo, the son of Hades, who makes his debut in The Titan's Curse. This role is considered one of the most important casting decisions for the future of the series.

Furthermore, the casting of a permanent Thalia Grace, the daughter of Zeus, is also expected to be a major announcement. The character has already been mentioned and seen in a tree form, but her physical appearance and role in the third book will require a talented young actor to join the main ensemble.

6. New Series-Original Character: Alison Simms

A curious piece of casting news for The Sea of Monsters is the rumored introduction of a new character created specifically for the series: Alison Simms. While details are scarce, the character is rumored to be a guest star, and some early fan speculation has deemed her "pointless" or a distraction from the main plot.

The inclusion of a series-original demigod or mortal character is a first for the Disney+ adaptation, which has otherwise been praised for its faithfulness to Rick Riordan's original work. This casting will be a test of how the show balances new elements with the established mythology.

7. The Return of the Gods and Villains

Beyond the main trio and the new Season 2 additions, the casting for the gods and recurring villains remains crucial for topical authority. Fans can expect the return of other key figures, including:

• Ares: Adam Copeland (The God of War)
• Hades: Jay Duplass (The God of the Underworld)
• Poseidon: Toby Stephens (The God of the Sea)
• Luke Castellan: Charlie Bushnell (The Son of Hermes and primary antagonist)
• Clarisse La Rue: Dior Goodjohn (The Daughter of Ares)

The consistency in the casting of these powerful mythological entities ensures that the tone and stakes established in The Lightning Thief carry seamlessly into the dangerous quest of The Sea of Monsters. The continued involvement of Rick Riordan as a producer guarantees that every casting choice is made with deep respect for the source material and the future of the entire Percy Jackson saga.