(Note: There's a lot of cast members in this, compared to the last one. So this will be long.)
Starring..
Jack Moore as Colton Reynolds
- 16 (17?) • Son Of Ares, The Sniper Of Olympus, The Beast Of Camp Half Blood, Slayer Of Titans, Slayer Of The Lydian Drakon, Honorary Son Of Apollo, Athena and Hera, Honorary Hunter Of Artemis; Also Honorary Son Of Kronos, Prometheus, Pallas, Perses, Lelantos, Typhon and Koios; Monster King -
"I've seen more than you can possibly imagine."
- plus Scottie Ray (voice of the Shredder from TMNT 2003) as the voice of the Monster King -
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Francesca Capaldi as Kayla Knowles
- 16 (17?) • Daughter Of Apollo, Rising Fashion Model, Archery Queen, Co-Slayer Of Titans, Honorary Daughter Of Ares, Aphrodite, Athena And Hera; Honorary Hunter Of Artemis; Honorary Daughter Of Klymene, Kronos, Lelantos, Prometheus, Typhon, Pallas, Perses and Koios; Monster Queen -
"I'm not going to stop.. not until I have my Colton back."
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Djor Goodjohn as Clarisse La Rue
- Daughter Of Ares, Honorary Daughter Of Hermes, Slayer Of The Lydian Drakon Clone -
"What Have You Done With My Brother?!"
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Walker Scobell as Percy Jackson
- Son Of Poseidon, Hero Of Olympus -
"Never expected I'd be stranded in Rome with you two."
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Leah Sava Jeffries As Annabeth Chase
- Daughter Of Athena, Honorary Daughter Of Poseidon, Hero Of Olympus -
"We lost our boyfriends once. We're not losing them again."
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Thomas Brodie-Sangster as Jason Grace
- Son Of Jupiter, Slayer Of Krios, Hero Of New Rome -
"You three are a strange lot.. especially Colton."
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Aryan Simhadri as Grover Underwood
- Satyr, The Chosen One Of Pan, Lord Of The Wild -
"The difference between Percy and Colton is simple. One prefers to take you up close, and the other can put a bullet through your head at really far distances."
- — - — - — - — -
Zendaya As Piper McLean
- Daughter Of Aphrodite -
"Kayla.. what you and Colton have is unbelievably sweet."
- — - — - — - — -
Amanda Stenberg as Hazel Levesque
- Daughter Of Pluto -
"I get resurrected and find out that one of my companions is the savior of the Pantheon the Greek version of my father belongs to, one is the former host of Kronos on a redemption journey, one has a hair trigger temper and the last one is a sniper. Great times."
- — - — - — - — -
Sophia Woodward as Thalia Grace
- Daughter Of Zeus, One of Artemis' Lieutenants, Hunter Of Artemis -
"How's your girlfriend doing, Sniper Boy?"
- — - — - — - — -
Finn Wolfhard as Nico Di Angelo
- Son Of Hades, Ghost King -
"I see you haven't changed at all."
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Tom Holland as Michael Yew
- Son Of Apollo, Honorary Son Of Ares, Sniper's Best Friend -
"First titans.. now giants.. the fates really love us, don't they?"
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Emily Rudd as Silena Beauregard
- Daughter Of Aphrodite, Former Spy Of Kronos, Honorary Daughter Of Hera -
"I mean.. you and Kelli saved me once.. I'll never forget that."
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Meta Goulding as Kelli
- Senior Empousai, Formerly Gaea's Agent In Kronos' Army, Now Ally Of Camp Half Blood -
"Saving the world again huh.. I'm in."
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Kaya Scodelario as Reyna Avila Ramírez-Arellano
- Daughter Of Bellona, Praetor Of Camp Jupiter -
"Let me get this straight.. you're the one the Gods call 'The Sniper Of Olympus'? Seriously?"
- — - — - — - — -
Jackson Geach as Frank Zhang
- Son Of Mars, Legacy Of Poseidon -
"You use a Whitworth Rifle as a weapon? Seriously?"
- — - — - — - — -
Froy Gutierrez as Will Solace
- Son Of Apollo -
"We lost Lee, and we nearly lost Yew once, so I'm not going to lose them again."
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Ian Nelson as Octavian
- Legacy Of Apollo -
"You're a fool if you think you can stop me, Colton."
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Amanda Arcuri as Lavinia Asimov
- Daughter Of Terpsichore -
"And here I thought I was the only one who fought from a distance with a weapon that's slow to reload."
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Charlie Bushnell as Luke Castellan
- Son Of Hermes, Honorary Son Of Kronos, Honorary Hunter Of Artemis -
"Why did I agree to do this again?"
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Ryan Potter as Ethan Nakamura
- Son Of Nemesis, Honorary Son Of Kronos -
"I hate this place so much. Like, some of these monsters we assisted."
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Andrew Alvarez as Chris Rodriguez
- Son Of Hermes, Honorary Son of Ares, Honorary Son Of Kronos -
"Clarisse is going to kill me if we fail."
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Chosen Jacobs as Charles Beckendorf
- Son Of Hephaestus -
"Shit man.. this place stinks."
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Kevin Quinn as Lee Fletcher
- Son Of Apollo -
"I survive one war.. only to get pulled into another. I am so over this."
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Sadie Sink as Rachel Elizabeth Dare
- Clear Sighted Mortal, Current Oracle Of Delphi -
"If Kayla wasn't dating Colton, I'd date him."
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Forrest Wheeler as Sherman Yang
- Son Of Ares, current head counselor of the Ares cabin -
"If you die, I'm dying with you."
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Jenna Ortega as Bianca Di Angelo
- Daughter Of Hades, Hunter Of Artemis -
"Guess this is how Nico felt after he found out I died."
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Crystal Reed as Zoe Nightshade
- Daughter Of Atlas, One of Artemis' Lieutenants, Hunter Of Artemis -
"So.. this is the Monster King."
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Katie Douglas as Katie Gardner
- Daughter Of Demeter -
"They're going to come back to us, right?"
- — - — - — - — -
Dixie Egerickx as Miranda Gardiner
- Daughter Of Demeter -
"I feel so lonely without Sherman."
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Brady Noon as Travis Stoll
- Son Of Hermes -
"I. Hate. Tartarus."
- — - — - — - — -
Wyatt Oleff as Connor Stoll
- Son Of Hermes -
"What do you mean, we put the land mines on the wrong hill?"
- — - — - — - — -
Caleb McLaughlin as Bryce Harper (not named after the Baseball player of the same name)
- Son Of Mercury, Legacy Of Mars -
"So wait.. we were in the camp of the Greeks this whole time?"
- — - — - — - — -
Grace Van Dien as Alyssa Hadley
- Daughter Of Venus -
"You are.. a rather beautiful one."
- — - — - — - — -
Peyton Elizabeth Lee as Clara Everett
- Daughter Of Mars -
"Weird bunch you all are."
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Other Main / Secondary Characters (that are not deities)
Natalia Dyer as Belle Adair • Daughter Of Demeter, OC of -JASONSGRACE •
Millie Bobby Brown as Lou Ellen Blackstone • Daughter Of Hecate •
Bruno Gunn as Asterios • Minotaur 2.0, servant of Apollo, Kayla's bodyguard, one of the twelve wardens that serve the Monster King •
Cole Sprouse as Austin Maxwell • former head counselor of the Ares Cabin •
Kiana Morales as Hylla Ramírez-Avellano • Reyna's sister, Daughter Of Bellona, Queen Of The Amazons •
Pierce Brosnan as Chiron • Trainer Of Heroes •
Jake Abel as Augustus • Roman Emperor, now mercenary of New Rome •
John Karna as Alabaster C. Torrington • Son Of Hecate, Honorary Son Of Kronos •
McKenna Grace as Caeli • Daughter Of Apollo •
Rose Louloudi as herself • Daughter Of Demeter, OC of Galatea-Green-31 •
Colin Ford as Alec Thompson • Son Of Hyperion, OC of goddessofwisdom- •
McKaley Miller as A.J. Hood • Daughter Of Apollo, OC of goddessofwisdom- •
Claire Capek as Adriana Sendria • Daughter Of Gaea, OC of Az56796743 •
Alexander Ludwig as Cato Richards (OC) • Son Of Kratos •
Isabelle Fuhrman as Clove Vasquez (OC) • Daughter Of Ares •
Miles Brown as Austin Lake • Son Of Apollo •
Thomas Kuc as Butch Walker • Son Of Iris •
Everyone Else As Themselves
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Roman Gods (Olympians + Hades)
Jeff Bridges as Jupiter
Toby Stephens as Neptune
Arnold Schwarzenegger as Mars
Luke Evans as Pluto
Taylor Swift as the voice of Venus
Sam Claflin as Apollo (Reason: Apollo is stated to have very little change between his Greek and Roman forms)
Dwayne Johnson as Vulcan
Penelope Cruz as Juno / Juno's old lady disguise as herself
Paul Rudd as Mercury
Jack Black as Bacchus
Nicole Beharie as Minerva
Crystal Reed as Young Diana / Hailee Steinfeld as Adult Diana
Alexandra Daddario as Adult Vesta / Violet McGraw as Child Vesta
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Olympians (Greek)
- — - — -
Kurt Russell as Zeus
(Reason: Great Performance as Old Lee Shaw in Monarch: Legacy Of Monsters (Godzilla))
Logan Lerman as Poseidon
(Note: I think Toby is good, but some people on Instagram wanted this and I had to agree - being one who has seen the films)
Lena Headey as Hera
Jay Duplass as Hades
Lin-Manuel Miranda as Hermes
(Literally acts like Hermes in real life since he still has yet to meet Charlie apparently)
Timothy Omundson as Hephaestus
Rosario Dawson as Athena
(Reason: She did good in Unstoppable (2010) and was Ahsoka Tano in Star Wars recently)
Jason Mantzoukas as Dionysus
Adam Copeland as Ares
Sam Claflin as Apollo
(Note: I would cast a younger version of him as Percy Jackson if I could, since Sam did play Finnick Odair in the Hunger Games)
Mackenzie Foy as Young Artemis / Jennifer Lawrence as Adult Artemis (Fun Fact: Jennifer is from Louisville, KY which is where me, the author, is also from.. and the birthplace of Colton Reynolds in the story. Cool huh?)
Ana de Armas as the voice of Aphrodite
(Reason: Aphrodite is basically everyone's definition of beauty in physical form to both mortals and demigods so I do think it would be best for her just to have a voice instead of an actress.. that way people can imagine whoever they want as playing her.)
Emilia Clarke as Adult Hestia / Erika Berman as Small Hestia
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Villains ( - Octavian)
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Eleanor Audley as the voice of Gaea (Reason: Even though she's dead - she died in 1991 - I do think her roles as Lady Tremaine in Disney's Cinderella and Maleficent in Sleeping Beauty prove her more than capable of being the voice of the Earth Primordial) / Katherine McNamara as Gaea' actress
Clancy Brown as the voice of Tartarus / Tartarus acting as himself
James Earl Jones as the voice of Porphyrion • Bane Of Zeus / Jupiter , former King Of The Giants • Porphyrion acting as himself (Reason: generally, given they are such iconic villains, except in the case of Periboia - and a few others - generally the villains themselves will be acting as themselves)
Grey Delisle-Griffin as the voice of Dimitra • Bane Of Hera / Juno • Angelina Jolie as Dimitra's Actress
Nika Futterman as the voice of Acacia • Bane Of Demeter / Ceres • Jodie Comer as Acacia's actress
Kazumi Evans as the voice of Valena • New Bane of Aphrodite / Venus, born to replace Periboia • Amber Heard as Valena's actress
Pat Carroll as the voice of Daeva • Bane of Hestia / Vesta • Karen Gillan as Daeva's actress
The late Christopher Lee (Count Dooku in live action Star Wars) as the voice of Alcyoneus • Bane Of Hades/Pluto • Alcyoneus acting as himself
Ian McDiarmid as the voice of Polybotes • Bane of Poseidon / Neptune • Polybotes acting as himself
Naz Edwards as the voice of Periboia • Princess Of The Giants, Original Bane of Aphrodite / Venus • Isabel Lucas as Periboia's actress
Tim Curry as the voice of Enceladus • Original Bane of Athena / Minerva • Enceladus acting as himself
James Avery as the voice of Kronis • The New King of the Giants, new Bane Of Zeus / Jupiter • Kronis acting as himself
Cam Clarke as the voice of Areti • New Bane of Athena / Minerva • Areti acting as himself
Eric Bauza as the voice of Mimas • Bane of Hephaestus / Vulcan • Mimas acting as himself
Chris Patton as the voice of Orion • Bane of both Artemis / Diana and Apollo / Phoebus • Orion acting as himself
Greg Carey as the voice of Hippolytos • Bane Of Hermes / Mercury • Hippolytos acting as himself
David Zen Mansley as the voice of Clytius • Bane of Hecate / Trivia • Clytius acting as himself
Chris Pratt as the voice of Thoon • Bane of the Fates • Thoon acting as himself
Frank Welker as the voice of both Otis and Ephialtes • the twin Banes of Dionysus / Bacchus • Otis and Ephilates acting as themselves
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Giants that aren't evil
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Mark Hamill as the voice of Damasen • Bane of Ares / Mars • Damasen acting as himself
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Misc. Castings
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Lance Reddick as the voice of Typhon
(A/N: And again.. long ass amount of castings. You all are welcome though.)