Rick Riordan (he/him) is the author of five #1 New York Times best-selling series based on mythology, including three that feature the character Nico di Angelo. His most recent novels are Percy Jackson and the Olympians: THE CHALICE OF THE GODS and WRATH OF THE TRIPLE GODDESS. He lives in Boston with his wife, Becky. Follow his news at RickRiordan.com.

Mark Oshiro (they/them) is the New York Times #1 bestselling, award-winning Latinx queer author of the YA novels Anger Is a Gift, Each of Us a Desert, and Into the Light, as well as middle grade books The Insiders, You Only Live Once, David Bravo, and Star Wars Hunters: Battle for the Arena. They are the coauthor (with Rick Riordan) of The Sun and the Star: A Nico Di Angelo Adventure. When not writing, they are trying to pet every dog in the world. Mark lives in Atlanta, Georgia. Follow them on Instagram @markdoesstuff.