A veteran TV writer, Marc Guggenheim has scribed episodes of The Practice, Law & Order and Brothers & Sisters; created the series Eli Stone; and served as a writer/producer for FlashForward and executive producer on the highly successful Arrow. In the world of comics, he came on strong with memorable work on Blade, Wolverine, Amazing Spider-Man and Young X-Men. Subsequent Marvel credits include X-Men, the Secret Wars limited series Squadron Sinister and X-Tinction Agenda, and Agents of S.H.I.E.L.D. for All-New, All-Different Marvel.

Artist Salva Espin worked in animation and video-game design before making his Marvel debut on World War Hulk: Damage Control; he also provided cover and interior artwork for Wolverine: First Class and Incredible Hercules early in his Marvel career. Espin has since been the series artist on Exiles with writer Jeff Parker, Generation Hope with Kieron Gillen and Deadpool with Daniel Way. He returned to the Merc with a Mouth with Deadpool vs. Carnage and Deadpool & the Mercs for Money.