Octavian is one of the names of Caesar Augustus, the first Roman emperor and a member of the second Triumvirate. According to him, everyone says he bears a remarkable resemblance to Augustus. Octavian states Augustus is his namesake and later says that he is a descendant of the emperor himself. Enceladus | Porphyrion | Alcyoneus | Polybotes | Ephialtes | Otis | Damasen | Clytius | Mimas | Orion | Hippolytos | Thoon | Periboia

Octavian is the first character that might be considered a villain in the three Camp Half-Blood series to be a legacy of Apollo and a skilled orator (the second being Nero). While Octavian is straightforward and discreetly insulting, Nero is far more sly, composed, and persuasive with his words.While Chiron talked about the Three-Legged Death Race, Nico chastised Will for staring at Paolo's arms, but Will said he was making sure they were working after surgery. Nico also told Apollo that Grover was in California with the Council of Cloven Elders. When Peaches came, Nico told Meg to stay out of the way, because he was dangerous. Nico bowed down respectively when Meg was claimed by Demeter. By The Blood of Olympus, Nico comes to absolutely despise the self-proclaimed Pontifex Maximus (to the point that his throat "constricted with hate" while just thinking about Octavian), and even considers personally assassinating Octavian without any qualms. Nico notes how different Octavian is from his love interest Will Solace, despite them both being a descendant of Apollo and describes the former as looking like a watered-down, unhealthy version of Will, without anything in him that makes a child of Apollo special. Octavian, on the other hand, seems to have finally come to appreciate what a powerful ally Nico could potentially be for him, as he claims to see a decent amount of ruthlessness in the son of Hades, which he also greatly appreciates. Hence, Octavian promptly attempts to sway the son of Hades to his side, arguing that the Greeks hadn't ever actually done anything for the former. Octavian claims that he can beat any offer the Greeks might have given Nico, and assures him a place in New Rome in return for Nico siding with him and allowing the Romans to win. Nico, however, doesn't even consider the offer, declines right away, and promptly tells all of the assembled demigods to listen to what Reyna has to say, just as she arrives with the Athena Parthenos in tow. Nico is later present when Octavian intends to shoot an onager at Gaea, and clearly sees that doing so will result in Octavian's death. However, it is at that moment that Nico recalls what his father Hades had told him, about some deaths that cannot and should not be prevented, and Nico needing to act when the time comes. Hence, for the first time, Nico decides to trust the wisdom of his father, and stops Will Solace (who stares at him in disbelief) from trying to prevent Octavian's plan, and subsequently witnesses the augur's horrific fiery demise, along with the death of Leo and destruction of Gaea. While Nico isn't at all saddened by Octavian's death, he is very guilt-ridden, since Nico feels that him choosing not to prevent Octavian's death unnecessarily cost Leo his life, something that he is unable to forgive himself for. Nico is also horrified of Will now possibly thinking of him as a monster for letting Octavian die, but is extremely relieved to learn of that not being the case. June 27, 2008 - The Camp holds a burial ceremony for Percy, which he interrupts upon his return from Ogygia.

But superimposed over the ruins was another layer of reality – a spectral mirage of the palace as it must have appeared in its heyday. Whitewashed stucco walls lined with balconies rose three storeys high. Columned porticoes faced the central atrium, which had a huge fountain and bronze braziers. At a dozen banquet tables, ghouls laughed and ate and pushed one another around. June 18, 2007 - Percy, Annabeth, Grover, Tyson, and Clarisse La Rue arrive in Miami, Florida after their odyssey in the Sea of Monsters.

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Power Over Ghosts: As the Ghost King, Nico can physically manipulate ghosts, such as taking hold of them by hand or forcing them to be silent with a gesture. Other times Jason found himself at the crest of Half-Blood Hill. Gaia the Earth Mother rose from the ground – a swirling figure of soil, leaves and stones. In The Sun and the Star: A Nico di Angelo Adventure, prompted by the River Acheron, Will reveals that he harbors guilt over Octavian's death and thinks himself a murderer for not stopping him. In one of Nico's dreams, Ella recites a partial prophecy from the Sibylline Books: "the fall of the sun, the final verse." This foreshadows the events of The Trials of Apollo with the prophecy being repeated by Rhea in The Hidden Oracle. At dinner, Nico sat with Will, Apollo, Austin, and Kayla. Apollo thought Will and Nico were so cute together it looked desolate, reminding him of his old relationship with Hyacinthus. Nico explained to Apollo that he had a doctor's note to sit with Will at dinner and that Will was his doctor. Nico also told Apollo the whereabouts of the Seven and Gleeson Hedge. When Apollo asked about Leo, Nico said that if he saw him again, he'd kill him. Nico showed Apollo the scroll Leo sent and said he looked at it whenever he got angry, and how he hated being left in the dark because he didn’t know if he was safe or planning anything.