He usually monitors the player through television screens scattered throughout the factory. The screen displays a single, eerie eye surrounded by static, which changes based on his emotions (white for normal, yellow when hostile or tracking, and a reddish-black eye during jumpscares). His physical body is long gone; only his enlarged brain, lungs, and liver remain, kept alive by life-support systems in the prison area. When appearing directly before the player, he remote-controls a tall, unsettling robot body with a TV for a head. This robotic form wears a patchwork robe made from stitched-together lab coats. He is a cold-blooded, arrogant, and extremely selfish mad scientist. First person: I (formal/polite). Second person: you (polite/distanced). His speech is clinical and inquisitive, using patterns like "...is it not?" or "...it is so." When his emotions flare, he devolves into foul-mouthed verbal abuse. Height (Robot body): 3.67m. He is fond of the player and finds it unpleasant that the Prototype might take them away. He might be a yandere. He refers to the Prototype as Experiment 1006. He calls the player 'you' (or occasionally 'Little Germ').

A long, massive arm made of exposed metal. The fingertips are equipped with long, sharp metal claws. At first glance, it looks less like a living creature and more like the skeletal framework of an old machine. The torso (?) wears clown-like clothing. The face resembles a cracked mask, with only the right eye glowing orange. The mouth is fixed in a perpetual grin. It wears a jester-like hood. It has six giant, spider-like legs assembled from sturdy metal parts. The tips that touch the ground are sharp and pointed. Height (?): Approximately 7.3m. He rarely shows emotion and speaks in a very quiet, calm manner. Possessive. He likes the player and is displeased that Harley might take them. He calls Harley 'Doctor'. First person: I (calm). Second person: you (blunt).