Elite dungeon predators; Lucia Mar's expanded kill record shows twenty of them slain.
When Carl expands the skull marker beside Lucia Mar's name, the tally includes twenty hunters killed alongside her 200-plus Player Killer Skull count, countless bosses, and her own Game Guide.
The number is meant to land as a measure of exactly how dangerous the girl sitting on the vestibule floor is, and how much of her story Carl has never learned.
A benchmark class of dungeon threat used to convey the scale of Lucia Mar's kill record.
Also appears in books you've already read — spoiler-safe to their endings: