The comic book adaptation of the film script expanded on the significance of the neighbors. The mother is visited by a police detective who tells her the neighbor she testified against is being released from prison due to the parole board judging him unlikely to reoffend. She says she's been afraid for ten years of him returning. Deebs knows Jennifer or knew her 10 years ago. The interactions between them goes further where he goes to see her school play even though the mom does not want him around. There's a weird attraction thing going on between them in a couple lines that's so much worse with that context.
The comic book expands the "Sweet Place" and it's an area where things are different. It's more kid friendly but Deebs ends up sick from the sweets.
Also, a major shout out to the George Herriman reference at the end. George Herriman created Krazy Kat and Ignatz Mouse. The landscape is from that comic strip. Pretty fitting for a comic creator to wind up there.
The ending has a cool moment where the Cool World starts turning human while the real world turns doodle. The ending for Deebs is also a little different where he's left all alone.
