A girl trapped in the deepest darkness. Many dangers await Six as she makes her way through, driven by hunger. While an ordinary child would have given up long ago, Six is a clever and strong girl who faces her fate without faltering, clad in her iconic yellow raincoat.

Mysterious, mischievous children. Unexpected things happen constantly where Nomes lurk everywhere. Living in fear of whatever happened in their past, they remain skittish. Yet, some Nomes still wish to befriend others, even though it is said that such Nomes usually do not live long.

He possesses the ability to swim and uses a flashlight as his primary tool. He uses these to solve puzzles and repel enemies. He is very sensible, kind, and calm.

A mysterious boy who hides his face under a paper bag. He shows a ruthless side, showing no mercy to his enemies. He has handsome features and a strong sense of justice, making him a classic protagonist. However, whether his overwhelming sense of justice occasionally turns into arrogance that hurts those around him is due to his childish ignorance or an unconscious madness is unclear. He is a boy with special abilities, capable of tuning into mysterious transmissions and synchronizing with the Signal Tower.

A mysterious boy wearing a crow mask. He is a master archer who can strike even the swiftest enemies with 100% accuracy. He also possesses the ability to teleport using mirrors. His bow, his means of attack, allows him to fire without having to move from his position.

A curious boy who is skilled at tinkering with machinery. He hides his face with a hat and goggles. He loves adventure and exploration and is comfortable touching insects and various other things. He is slightly faster than others and sometimes leaves his companions behind, causing them to get lost.

A giant doll-like character characterized by cracked white skin and sparse remaining hair. Monster Baby wanders through ruined cities, destroying buildings while eternally searching for playmates or toys that may or may not even exist. In addition to her massive body and superior physical strength, Monster Baby can emit a powerful light from her right eye, instantly turning any living creature caught in her gaze into stone.

A humanoid character characterized by long arms and sagging skin. The Janitor is one of the inhabitants working on the massive vessel. His task involves capturing and monitoring children found within the ship, managing them until they are eventually shipped out as meat. Due to his familiarity with the environment and his keen sense of hearing, he can function normally despite being blind; however, if forced into a situation where these senses fail, he becomes unable to respond appropriately to his surroundings.

A partner who is the polar opposite of Guest. Guest's companion who has the ability to fly. Their personality is the exact opposite of Guest's. Wearing a long white short-sleeved garment with their face hidden by red cloth and a rope tied around their neck, it's hard to tell if they are even alive, but they aren't particularly scary.