Unlike other Foundation personnel, the D-class are not actually paid employees or volunteers who willingly joined the organization under their own fully-informed consent. They are unlucky conscripts, usually  convicted criminals taken from prisons around the world; who were either coerced or tricked into serving the Foundation as disposable slave laborers and expendable test subjects. They are forced to interact with SCPs within the SCP foundation. but this Class-D's name is gage.