From the Adventure Time episode “Blood under the Skin.” Adventure Time was created by Pendleton Ward. The lead designer on “Blood under the Skin” was Phil Rynda. Natasha Allegri and Andy Ristaino were designers. The character clean-up artist was Alex Campos. Ron Russell and Simon Simmonds were the colorists. Pat McHale was the creative director. Nick Jennings is the show’s art director.