!Original Characters

!!Peter Blofis

Protagonist of the story, son of Sally Jackson and Paul Blofis. Shy and polite in nature, but determined and loyal. Before Percy disappeared, he used to tell stories to the little kid, giving him basic knowledge of the Olympians, Camp Half-Blood, etc. Armed with the basics of what about the demigod world, not really good at handling weapons and defending himself.

* AscendedFanboy
* BadassNormal
* BrainyBrunette: Though Peter's appearance is not really described in the story, in his official rough character sketch, his hair is brown.
* DeadpanSnarker: He's slowly turning into this.
* {{Determinator}}
* GenreSavvy: Is hinted to be this, due to the fact that he has basic knowledge about how Greek Mythology works in the modern world by listening to Percy's storytelling.
* InnocentBlueEyes
* MuggleBestFriend: To Leon.
* NaiveNewcomer: Averted.
* TheSoCalledCoward
* UnfazedEveryman
* UnlikelyHero

!!Leon Hamilton
A son of Demeter, and Peter's best demigod friend. When he was little, he was saved by a demigod and was brought to Camp Half-Blood, and Leon lived the duration of his life there.
* DeadpanSnarker: To Claire.
* OlderThanHeLooks: He's sixteen when he looks thirteen.
* MessyHair: Peter describes Leon's hair that it "looked like it wasn't combed for a century."
* TheLancer
* RedOniBlueOni: Leon's Red to Claire's Blue.
* FireForgedFriends: With Claire.

!!Claire Williams
A daughter of Apollo. Daughter to a former nun (which explains her catholic roots). Has a stoic attitude, although she has a soft side for her celebrity crush Nico di Angelo.
* ActionGirl
* RedOniBlueOni: Blue, to Leon's Red.
* SignificantGreenEyedRedhead
* {{Fangirl}}: To Nico.
* FireForgedFriends: With Leon.

!Canon Characters
!!Leo Valdez [[spoiler: aka Mr. Flamingo]]
* CoolUncle: To the kids of his neighborhood.
* BerserkButton: Whoever "she" is, Leo certainly does not want to talk about her.
* DarkAndTroubledPast: Other than his canon backstory, it seems the war a decade ago shaken up fun old Leo.
* HeroOfAnotherStory. Sort of.
* KnightInSourArmor
* GreaseMonkey
* StepfordSmiler -> StepfordSnarker