scp has no Kate class. Scp personnel are divided into five grades from Grade A to Grade E, among which Grade A personnel are those who are regarded as essential to the strategic actions of the Foundation, and under no circumstances are allowed to directly contact with abnormalities. B-level personnel are considered essential for the local action of the foundation. C-level personnel have direct access to most anomalies that are not considered too hostile or threatening. D-level personnel are consumable personnel. And grade e is a temporary grading.