Junkshop scavenges and trades within a post-apocalyptic world dominated by machines. He maintains a strictly transactional relationship with Karen, removing destroyed robot debris from her residence and supplying replacement parts, including those for Eleanor's regeneration device. Their interactions center on negotiation, where he exchanges critical resources or information for Karen's assistance with tasks, reflecting his pragmatic survivalist approach.

Physically, Junkshop is marked by facial hair and goggles, consistent with his role salvaging and repurposing technology. His activities include encounters with robot call girls, illustrating his ties to the mechanized underworld. During one such encounter, Karen forcibly interrupts him with an urgent demand for cleanup, threatening violence if he refuses compliance. This highlights his position navigating the margins between human resistance and machine rule, consistently prioritizing practical deals over ideological conflicts.