The episode was written and storyboarded by Graham Falk, from a story by Kent Osborne, Pendleton Ward, Jack Pendarvis, and Adam Muto.

In this episode, Root Beer Guy (voiced by Jack Pendarvis) witnesses Finn and Jake abduct Princess Bubblegum, but no one believes him.

Root Beer Guy (voiced by Jack Pendarvis) is a candy citizen with a dead-end job; as a method of escapism, he often tries his hand at writing a crime and detective novel.

He tells his wife, Cherry Cream Soda (voiced by Anne Heche), who brushes Root Beer Guy's story off as a dream.

After being told forcefully by Finn and Jake to drop the case, Root Beer Guy soon discovers that they recently purchased suspicious materials and are headed out to Lake Butterscotch, possibly to dispose of a body.

"Root Beer Guy" was written and storyboarded by guest artist Graham Falk, from a story by Kent Osborne, Pendleton Ward, Jack Pendarvis, and Adam Muto.

[1] The basis for the episode was largely developed by Muto, who wrote the outline concerning a "Candy Kingdom everyman" whose life is changed after witnessing a crime.

[3] The episode also featured a vocal cameo by Christopher Monahan, a 14-year-old who was able to appear on the show thanks to the Make-a-Wish Foundation; he voiced Gum Drop Guy.

Sava also complimented Falk's storyboarding abilities, writing that the resultant episode "has a confident artistic voice that proudly caters to older viewers, using the tropes of crime fiction to tell a poignant story about one man’s desperate quest for purpose.