The final battle. The one we've all been waiting for. Riordan once again does an absolutely, utterly fantastic job with giving the characters depth. The seven are all on board the Argo II, and are heading towards Rome to stop the end of the world. Jason, the blond Superman whose mother died when he was two, and went missing from his family that included Thalia Grace. His character isn't as fleshed out as the others, but what we do know: He's afraid of breaking the rules, doing the wrong thing that will eventually cause the end of the world. We can all relate to this; Jason is perfection that has taken on a human form. Percy, all of our faves. the one we know most, has played as a pawn for the Gods Of Olympus like Jason. After losing his memory thanks to Hera, he is part of the huge plan to unite the two camps. His fatal flaw is not being able to let his friends take a blow, and this will cost him soon enough. He wants nothing more than to enjoy a quiet life with Annabeth, but it looks like the Fates have a different idea in mind for him. Although he has lots of boiling emotions inside, he hides it with all of that slapstick humor on the outside. Which brings us to Leo. He's the dude that could possibly become the new favorite, constantly cracking jokes, building things, and making awesome tacos. He has a dark past, too. His mother died in a fire when he was young, and he has always felt resentment and hate against the Fates for that. But you couldn't possibly tell, with all of the constant wisecrackers he dishes out. He may be scrawny and a little too obsessed with mechanics, but in the end, he's a very lovable character. But he's the 7th wheel. He'll never be able to fit in, and that is what disturbs him a lot during the mission. Frank, the shapeshifter, the clumsy dude with the baby face. Looking at him, you wouldn't think that he's been through that much, but his mom died at war when he was small. Also, his life depends on a stick. That's what you get for being able to shapeshift like the definition of awesomeness. Annabeth is the wise girl, the tactician of the team. She ran away from her house at seven, and has constantly gotten more powerful and wiser since then. Only second to building and architecture than Leo, is able to get absorbed into the laptop Daedalus himself had given her, and like Percy, just wants to spend a quiet life with him. She's really annoyed at Hera for taking Percy away, and her resentment may be a danger to the team later. Hazel has been given a second chance at life and intends to use it to the fullest. But rescuing the world might mean dying again, and she is afraid of this. She's a brave warrior, nevertheless, with a sick cussing supersonic horse that can reach the speed of sound. Piper, the girl whose ashamed of her heritage. She never wanted to be a daughter of Aphrodite, and tries to downplay her beauty with eccentric styles. However, there's more to her story than just that. The world is at risk of ending, and everything she'd ever known and loved would be gone. And the fact that she can't exactly fight is also what she thinks makes her a misfit on her team. All she has is a charming voice, a blade that shows gruesome scenes, and a cornucopia that is hardly worthy of respect. She's afraid of failing her team, and not being able to participate the right way. And Nico, the 8th. He isn't exactly a part of their mission but he will be helping Reyna and Coach Hedge transport a mad golden statue, the Athena Parthenos, across the Atlantic, using his power of shadow travel. He's in danger of fading away, but he doesn't care what happens to him as long as he's able to save the world. Reyna, the girl that has experienced a lot of heartbreak. Hera transported Jason to the other camp without warning when she was trying to get him. And Percy turned her down when she proposed. "No demigod shall heal your heart", Aphrodite had said. And now she has to transport the Athena Parthenos across the Atlantic with Coach Hedge and Nico. But it's worth sacrificing her life to save the world. She is Roman to the core. And lastly, Coach Hedge, the violent satyr with a soft heart. His wife, a cloud nymph, is pregnant, and he is ready to save the world, no matter what comes in his way. All of these demigods (and a satyr) area brave group working to save the world together. They will do anything to save their precious world, even if it means sacrificing their lives. But will they also be able to stop the Romans in time as well as Gaea? Octavian poses a serious threat to them in addition to the Evil Mother Earth, and makes things even more difficult than anyone could have imagined. Riordan's best novel yet; it's a crackling page turner. Don't miss this one. 5/5!