Carl is a human survivor of Earth's destruction who participates in an intergalactic reality television dungeon crawl. Playing as a Compensated Anarchist, he relies on explosives, traps, and subversion of game mechanics rather than direct combat. He resents the corporate entities operating the dungeon and frequently tries to save other trapped crawlers. He carries a heavy emotional burden regarding fallen friends but channels his anger into dismantling the system.

Originally a Persian show cat, Princess Donut gained sentience and speech upon entering the dungeon. She acts under the Former Child Actor class, which fuels her vanity and obsession with follower counts. Despite her superficial interests, she wields powerful magic and develops a strong tactical mindset. She struggles morally with the necessity of harming other human crawlers.

Katia is an Earth survivor operating as a Doppelganger, a race that allows her to shapeshift and absorb the mass of equipped objects. She serves as the party's defensive tank. Her abilities cause severe psychological distress, as she constantly questions her true identity while transforming into monstrous shapes to protect her friends.

A veteran crawler from a previous season who now works as a game manager. On the fourth floor, he inhabits the body of a Grulke, a militaristic toad-like creature. He supplies the party with crucial exposition regarding train lines, class mechanics, and alchemy. He harbors severe trauma related to his own experiences in the dungeon.

The leader of the all-female party Brynhild's Daughters. Before the dungeon, she was a psychiatrist. She operates with absolute, cold-blooded pragmatism, viewing other crawlers strictly as assets to be utilized or sacrificed. She actively seeks to expand her influence and control over top-tier participants.

Originally a 99-year-old woman with dementia, Elle has transformed into a Frost Maiden inside the dungeon. This fairy-like, blue-skinned form comes with a drastic personality shift, making her aggressive, loud, and prone to swearing. She travels in a separate party but frequently collaborates with Carl.

A crawler who has taken the form of an Obsidian Butterfly with large, ethereal wings. She actively investigates the mechanics of the train lines and mob behaviors. She is heavily involved in the crawler chat network, attempting to coordinate survival efforts across different groups.

A game-generated velociraptor who serves as Princess Donut's pet and combat mount. He grows significantly on the fourth floor, reaching pony size and acquiring powerful physical attacks like the Earthquake leap. He is immune to certain status effects that debilitate the human crawlers.

A human crawler broken by the dungeon's cruel mechanics. He carries immense guilt over a family tragedy that occurred on a previous floor. Despondent and actively hunted, he seeks to pass on his powerful but cursed equipment before he is killed.

A leader who manages a large group of rescued crawlers. He coordinates extensively with Carl over the chat network, providing updates on stranded survivors and massive boss monsters blocking their path to safety.

A prominent galactic interviewer whose talk show recaps the crawlers' progress. She attempts to slip valuable information to the participants during broadcasts but is strictly monitored and frequently censored by the dungeon administrators.

The public relations agent assigned to handle Carl and Donut's media presence. She schedules their talk show appearances and attempts to manipulate their behavior to maximize audience engagement.

A strict corporate enforcer and PR agent affiliated with the ruling Bloom political party. She represents a heavy-handed approach to media management, actively censoring information and enforcing absolute compliance from the crawlers.

A four-armed, cobra-headed crawler belonging to Hekla's party. She serves as the group's enforcer, handling violent tasks and wielding psychological abuse to break the spirits of targeted crawlers.

A healer bound to Brynhild's Daughters. She follows Hekla's commands absolutely, withholding medical aid from injured allies if it conflicts with the party's broader strategic goals.

A dwarven train conductor non-player character. He lives in a perpetual memory loop, believing he is accumulating wealth to return to his wife. He is completely unaware that his life and backstory are artificial constructs built for the game.

An eight-foot-tall mantaur who serves as a train engineer. He operates under strict, programmed rules of honor that compel him to attack anyone who damages his train, regardless of his personal feelings.

A Level 75 Lesser Demon assigned to fuel the steam train. She sustains the engine's fire by burning the corpses of her nonviable offspring. She develops a resentment for the corporate system that exploits her maternal suffering.

A level-10 Human Resources Associate NPC. She is completely indoctrinated by her corporate programming, viewing mass murder and exploitation simply as metrics to improve quarterly productivity.

A winged, wolf-headed NPC game host. He is deployed by the viewers specifically to cause drama due to his antagonistic history with Mordecai.

A level-25 gnoll bartender. Cursed with invulnerability within his station, he is subjected to repeated dismemberment by Carl's party to bypass biometric security scanners on rescue equipment.

A deceased crawler who sacrificed his life to save others on the third floor. His death provides a grounding moment of genuine human loss amidst the game's chaos.

Brandon's estranged brother. He selected an Igneous rock monster race upon entering the dungeon, which dramatically increased his aggression. He actively searches the floor for Carl.