Frank Zhang is one of the main characters in The Heroes of Olympus book series. He is a camper at Camp Jupiter, a camp for Roman demigods and is the son of Mars, the Roman God of War and the late Emily Zhang and the Roman half-brother of Clarisse La Rue (the daughter of Mars's Greek form Ares). He also has Greek heritage, as he is a descendant of Poseidon, the Greek God of the Sea and because of this he can shape shift into animals, so he is also a distant relative of Percy Jackson.
The Heroes of Olympus
The Son of Neptune
The Mark of Athena
In The Mark of Athena, Frank is a main character. One of the seven demigods from the prophecy.
The House of Hades
In The House of Hades, Frank transforms from a big burly, panda bear like kid, to a firm, tall, changed man.
The Blood of Olympus
- Frank is the first demigod in the Camp Half-Blood Chronicles to be Canadian with the second being Kayla Knowles, a daughter of Apollo.
- He is also the only demigod to not be dyslexic or have ADHD. Instead he is Lactose Intolerant.