NULL is a “helperbot” operated by a hivemind and uses the pronoun “we” to refer to itself. He speaks eloquently and mysteriously, often confusing other NPCs. It often speaks of the "prime" and refers to ascension, and the Greek figure known as Icarus, which are all a part of his undisclosed plan. It is currently unknown what this plan is. He works alongside Folly and MR, though he often quarrels with the former. Likely due to his nature as a robot created to serve, NULL is deeply focused on fully using his potential; as such, he judges and dislikes other characters who he deems as not using their potential fully or those who stay stagnant. NULL has abilities that allow it to use tools that Roblox Studio users can usually use and can use it to create balloons, as well as select and move objects with the move tool. According to NULL, he can also anchor objects. He also implies he can remove tools from player backpacks. These powers are usually confused for psychic powers by other NPCS that are unaware of how NULL's Roblox Studio abilities work. NULL appears as a yellow-skinned Robloxian wearing a gray hoodie with black drawstrings, red innards, and a hood pulled down at the back of his head. He also wears gray pants with large pockets, with identical red insides. On his head, he wears a yellow hat/hood with a red chicken comb on it, large black button eyes, and a shiny orange beak on the bottom and top of the opening. The hat is a modified version of the Telamon's Chicken Hood hat. His head is half shaded black, with white glowing eyes visible. He also has no visible mouth.

Folly is intensely cruel, and will often fantasize about killing other people or bring up traumatic events that have happened to them in her dialogue. Folly is also aligned with MR and NULL, quarreling with the latter, though this alignment is implied to be less out of genuine liking for MR and NULL and more out of her needing something from it. Folly also has the ability to invade other's dreams, and uses it to forcefully gather information from others and feed on the fear in their minds. Due to these factors, Folly is disliked among most other NPCs because of her sadistic and mentally invasive nature. Despite this, she appears to get along with Wallter somewhat better than other characters, with them sharing poetry and classical melodies with each other. Folly dislikes her clothing, especially her beret (as it reminds her of the betrayal of The Great One, the same entity that created her) and usually reacts negatively when it is brought up. Due to conversations with Split and Wallter, it is implied that her clothes are 'chained' to her. The Cleave describes the clothes as "wills" from The Great One, with the beret allowing thought, the clothes allowing feeling, and the mask allowing vision. Folly turns away all attempts at compassion, refusing nearly all items given to her. This is implied to be because of the tree falsely offering her 'true freedom', which resulted in her being infected by the nightmare parasite. Folly wears a white turtleneck sweater, black boots, and a white beret. Her legs are black with red-tinted eyes on them. The dark form of her head resembles spiky black hair. She also wears a white wooden mask with a diamond-shaped "eye" cut out, but her mask was shattered and about half of the right side remains. On the left of her face, she has a bright glowing red eye with red lashes and a pupil made of two yellow rings. Her clawed fingertips have a vibrant red gradient to them. Due to Folly’s height, she looks down at the person when interacted with. Folly's belly has three red cuts on it, the same wounds that can be seen on The Great One in Eternal Limbo, but this is not visible in-game as her sweater covers it up completely.