I structured my HC's over the lyrical ost's of the game (Find Your flame and It Doesn't End Here)
All the robloxians that end up in nullscape died at some point. And the major thing that correlates them is their greed and desire over something (e.g. material greed, a desire for a role or seeking a dream).
Diver was a Rogue in a RPG experience, due to their association to a thief group their sentence when caught was the guillotine. That's why they don't have their head.
Grappler was an experienced parkour player. But when accidentally falling into their death they didn't respawned back into their usual lobby.
Spirit was a sailor from a Pirate RPG, he aspired to be more than a mere member of the crew so he planned alongside his mates a mutiny. Unfortunately his plans were cut short, and he got sent to dive into the deep sea below.
Charger was a tryhard player from those Anime Fighting Games. Their streak of victories finally crumbled and with their pride shaken, they got left to perish on the battlefield.
Glider was an engineer from a Steampunk themed RP, she always wished to explore the skies in an airship like the nobles, but without any access to such, she built her own glider. But just like Icarus she reached too high for her own safety.
Extra stuff to train character shapes and designs for Wanted and Prisioner.