Gunner Wright, Isaac Clarke's voice actor in Dead Space 2 and Dead Space 3, returned to reprise his role in the remake of the original Dead Space. Isaac was given more dialogue compared to the original game where his only lines were grunts and screams, although his speech is still limited. He only speaks when he is spoken to, and in situations where the developers thought "it would feel weird if he remained silent", most commonly being instances involving his engineering experience like repairing the ship or detonating something, or finding a new objective. This decision was made to flesh out Isaac's character and personality to keep it in line with changes made in the last two games. Motive Studios clarified however that outside of these moments, Isaac would remain silent, as they wished to stay true to the isolated atmosphere the series was known for.