Frank Zhang

A son of Mars and descendant of Poseidon who can shapeshift.

Frank Zhang is a Roman demigod, the son of Mars (the Roman form of Ares) and a mortal woman. He is one of the seven protagonists of The Heroes of Olympus series, first appearing in The Son of Neptune. Frank is a member of Camp Jupiter, where he is first a probatio of the Fifth Cohort, is made a centurion, and later becomes praetor. He inherited the ability to shapeshift through his family's descent from Periclymenus, a grandson of Poseidon.

Quick Facts

First major appearance: The Son of Neptune

Facts from the source article.

Background

Because he is both a son of Mars and a shapeshifter, the Fates tied his life force to a piece of firewood when he was a baby, so if the wood burns up he will die; he eventually entrusts the firewood to Hazel.