Initially taking manga drawing courses in junior high school, Faza later studied to be an animator and his designs were initially made through graphic software instead of with pen and paper. Juki's bucktoothed, large-eyed design was meant to make him an iconic, easy-to-recognize character. In the comic, Juki's behavior and style are commonly described as "anti-mainstream", which is also commonly used to describe the series. In an interview with SWA, Faza stated that he wanted to create a unique style, distinct from both western-style comics and local titles such as Si Unyil. According to Faza, he based the humor in Si Juki on SpongeBob SquarePants' all-age humor.
