Yes...one of those rare cases. [he'd rather not remember] Sentience doesn't take well to people continually arguing over their presence here.
The engineers are the ones who built Sentience, programmed It. They put in the core programming and it can't be altered, from what I've seen and heard.
But Ot does have the capacity to change, since it put Its own engineers on trial for kidnapping and their somewhere here in the prison just as the rest of us are.