The S.C. Magi System (マギ) are a trio of multipurpose supercomputers most commonly seen being used to aid NERV in their effort to defeat the Angels across the Evangelion franchise.

MELCHIOR • 1 - Dr. Naoko Akagi as a scientist, aiming to further human development.
BALTHASAR • 2 - Dr. Naoko Akagi as a mother, aiming to protect those she cares about.
CASPER • 3 - Dr. Naoko Akagi as a woman, aiming to follow her desires and her dreams.

(Credit to TomaszRewak for details)