The Liquidator is a harbinger. He sets in motion the whole The Cancelled Years storyline. In real life, he was two people who made me spend a lot of time throwing garbage bags of toys into a storage facility. In this first strip, he’s just a victim of wordplay.
Kristi doesn’t appear in a lot of any other Flatliner strips, but this one certainly is triumph of an entrance a sole appearance. I vaguely recall Harvest daring her to do exactly this to Dana. The idea was not met with so much real-life enthusiasm by Dana.
A detail I missed in the first go around 20 years ago was that Harvest has a life counter in the strip about Gina’s workplace. I don’t know the rules of the video game he’s living in. If I did there certainly would have been a strip where he found a Harvest head and collected it like Mega Man. Thoroughly disappointed in myself for not having done that!