Dr. Everett King: One of the Foundation's most experienced mathematicians, Doctor King's reputation has nevertheless been overtaken by his testing record involving unusual results. Despite this, he regularly contributes to internal Foundation intellectual periodicals.
Dr. King's testing must be heavily supervised, due to the presence of apple seeds that seem to be increasing exponentially in intensity. Intensive observation indicates Dr. King is irritated by his seemingly inherit effect.
@Mavado this one is sentientAs a note, any SCP that's autonomous, sentient and/or sapient is generally classified as Euclid, due to the inherent unpredictability of an object that can act or think on its own.