These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Roomies!, It's Walky!, Joyce and Walky!
Fan Nickname: The organization that Jason's father heads was never given an actual name. Fans eventually took to calling them the JFO (Jason's Father's Organization).
The Head Alien was dubbed "Dexter" by fans after he died and was resurrected, which mirrors your body and thus switched his fingered hand from his left arm to his right. This was never seriously used in the comic, though it was was referenced during the Fans! crossover.
Fridge Horror: Head Alien II's monologue about how he was free to drift from dimension to dimension destroying SEMME over and over has a panel of dead agents drawn in the style of Willis's elementary-school work, implying that he pretty much wiped out that Lighter and Softer world. Holy crap.