Gore (they/it) is an alien, a parasitic slime that can interface with electronics. It can morph its bodymass into various organs as needed, like eyes, teeth, claws, or tendrils, but also less flashy internal organs like lungs.
Dummy (they/he/she) is a broken down 'service doll', a robot worker/maid that Gore inhabits and controls.
Gore could just as easily invade and control other bodies, including those of living beings, and can choose between keeping them alive or not for the process.
Gore can actuate Dummy's motors and move her limbs around (mostly) as if it were its own body. This is different from merely occupying and dragging around a heavy suit of armor. Instead, you should think of it as an exoskeleton. It's not perfect, and there might be hiccups in Dummy's movement, but she is certainly stronger than the average human.
When Gore inhabits another body, which is to say most of the time, it can adopt a combination of names, such as 'Dummygore', to differentiate between other forms it may take.
Gore may seep in and out of any body through small cracks. For animals, these can be pores or major openings like mouthes and eyes. In Dummy and other robots, any cracks in their body serve the same purpose.