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Season two of has cast one of its key new roles. Daniel Diemer will join the Disney+ series as Tyson the cyclops, a fan-favorite character from author Rick Riordan’s quintet of novels. Diemer’s casting was announced Thursday during a panel for the show at Comic-Con.

Season two of , based on the second book in the series, , is set to go into production next week in Vancouver. Diemer will be a series regular, joining stars Walker Scobell (Percy), Leah Sava Jeffries (Annabeth) and Aryan Simhadri (Grover). Tyson is a young cyclops who grew up alone on the streets and finds it tough to survive in the human world.



Shy, awkward and big-hearted, he’s also a child of Poseidon (Toby Stephens) — which means he’s Percy’s half-brother. of will follow the young demigod back to Camp Half-Blood a year after the events of season one — and finds his world “turned upside down,” according to the show’s logline. “His friendship with Annabeth is changing, he learns he has a cyclops for a brother, Grover has gone missing, and camp is under siege from the forces of Kronos.

Percy’s journey to set things right will take him off the map and into the deadly Sea of Monsters, where a secret fate awaits the son of Poseidon.” Diemer is coming off of Hulu’s critically acclaimed limited series . His credits also include Netflix’s and feature films and .

Riordan and Jonathan E. Steinberg created the series, which comes from 20th Television. They executive produce with Dan Shotz, Rebecca Riordan, Craig Silverstein, Bert Salke, The Gotham Group’s Ellen Goldsmith-Vein, Jeremy Bell and D.

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