Yarnaby

In Chapter 4: "Safe Haven", Yarnaby is introduced by Harley Sawyer, aka The Doctor, as one of his loyal experiments following The Player's escape from the Prison Cell Blocks. As Yarnaby traverses the Containment Zone, Doey the Doughman assists The Player by distracting Yarnaby and guiding them away from him. The Player has one final encounter with Yarnaby in No Man's Land, where he attempts to leap toward them in their final chase, resulting in him getting hooked onto a chain and falling into a vat of molten metal.