Rick Riordan Creator, Executive Producer, Writer Jonathan E. Steinberg Creator Walker Scobell Percy Jackson Actor Leah Jeffries Annabeth Chase Actor Aryan Simhadri Grover Underwood Actor Jason Mantzoukas Dionysus , Mr. D. Actor Charlie Bushnell Luke Castellan Actor Toby Stephens Poseidon Actor Lance Reddick Zeus Actor Edge Ares Actor Bert Salke Executive Producer Dan Shotz Executive Producer Ellen Goldsmith-Vein Executive Producer James Bobin Executive Producer Jeremy Bell Executive Producer Jim Rowe Executive Producer Jon Steinberg Executive Producer Monica Owusu-Breen Executive Producer Jet Wilkinson Executive Producer, Director