Who is the main protagonist of Dead Space?

The main protagonist of Dead Space is Isaac Clarke. He is an engineer who is thrust into a nightmarish, survival-horror situation aboard a derelict spaceship called the USG Ishimura. Isaac's journey unfolds as he battles gruesome Necromorphs, while also desperately searching for his girlfriend and unraveling the mysteries of the Marker. Throughout the game, Isaac's character becomes the central focus, as players experience his emotional struggles, determination, and the burden he carries as the last hope for survival.