Samaritan is a Gen II Core tasked with being the caretaker of Class III Cores. He is known as Sam. He is rather high-minded, and seemingly egotistical, but he is actually a good person. He was integrated as a 'caretaker core' into GLaDOS, but was removed in the constant cycle of cores being implemented and unimplemented. His job while not attached was to exercise his caretaking abilities to watch over the Class III cores. This job stuck after the Core Integration System fell into disuse nearing GLaDOS' takeover.