English Voice: Aaron Krohn
Seiyuu: Kouichi Yamadera
Although employed in the Special Inspections Division of NERV, Kaji was secretly spying on NERV's operations for the SEELE organization at the same time - a position that resulted in his murder. The results of his investigation were entrusted to his lover Misato, with whom he shares a complex and somewhat turbulent history. He was also responsible for transporting the Adam embryo from Germany to Japan.
Though he acts as a double agent, Kaji doesn't belong to any single organization but works to serve his own ends. However, he has an unquenchable thirst for the truth. He respects and honors those who are willing to fight for their own futures. Where is the truth that he's looking for? And, when he finally finds it, will his thirst for answers be sated at last?