Welcome to Camp Half-Blood Answers. What would you like to know?

He is called a mare by Percy In The Sea of Monsters, but this could be an error by Rick Riordan as Blackjack is male.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.