Olivia Olson (born May 21, 1992) is an American actress, singer-songwriter, and screenwriter, largely known for her voice roles as Vanessa Doofenshmirtz in Phineas and Ferb and Marceline the Vampire Queen in Adventure Time. She also played the character of Joanna in the 2003 film Love Actually and its 2017 short sequel Red Nose Day Actually. Along with this, she is also a writer, having written the Boom! Studios graphic novel Marcy and Simon, co-authored Adventure Time: The Enchiridion and Marcy's Super-Secret Scrapbook, and contributed writing to the best-seller Adventure Time Encyclopedia for Cartoon Network. In 2023, she began writing for the Phineas and Ferb revival.

Jeremy Sorese is an artist based in Brooklyn. He holds a BFA in sequential srt from the Savannah College of Art and Design and has published two graphic novels: Curveball (2015) and The Short While (2021). From 2012 through 2013, he was resident at La Maison des Auteurs, a comics specific residency program in Angoulême, France. Having moved away from earning part of his living as an illustrator and cartoonist within the past few years, Sorese has moved toward painting to prioritize the personal within his work. This is his second solo show with AuxierKline after his first, Pleasure Principle, opened October 2023. He was a resident at the Helene Wurlitzer Foundation of New Mexico from September until December 2025.

Leah Williams is an American comic book writer best known for her superhero stories with both Marvel and DC. She received a GLAAD Media Award nomination for Outstanding Comic Book in 2021 for her work on Marvel's X-Factor, and has written popular DC series including Gotham City Sirens and Power Girl.

Carey Pietsch is currently the co-adapter and artist on the Adventure Zone graphic novel series from First Second books. Books 1–6—The Suffering Game, The Eleventh Hour, The Crystal Kingdom, Petals to the Metal, Murder on the Rockport Limited, and Here There Be Gerblins—are out in bookstores everywhere, and you can buy them online at theadventurezonecomic.com. Previously, she was the artist on the Mages of Mystralia webcomic, Lumberjanes Issues #29–32, and Adventure Time: Marceline Gone Adrift. Her original comics Rift and The Witches' Daughters appeared in SOI's Comic & Cartoon Art Annual, 2015; Gleam was a part of the 2016 show. Her work has also appeared in several anthologies, including Chainmail Bikini, Oath, 1001 Knights, Blood Root, and Terrestrial. When she's not making comics, she's probably playing a tabletop game, collecting more plants, or working on a goofy podcast about Animorphs. She graduated from Swarthmore College in 2010 and is now living in Brooklyn.

Zachary Sterling is a Filipino American, New York Times bestselling illustrator, sequential artist and designer based in Portland, Oregon. His latest works include writing/illustrating his middle-grade fantasy and slice of life graphic novel Mabuhay! for Scholastic's Graphix imprint, and his shounen-western hybrid battle manga Punch Up! for Oni Press. Formerly the artist on BOOM! Studio's Adventure Time graphic novels and prop designer on the Bee and Puppycat cartoon. He studied at the Pacific Northwest College of Art, the Art Institute of Portland, and interned at Helioscope Studio (formerly Periscope Studio).