Affiliation(s): NERV
Rank: Special Inspector
Age: 30
Birthday: June 17, 1985
Known relatives: Misato Katsuragi (lover, former girlfriend), Asuka Langley Soryu (former guardian of)
Blood type: A

Kaji, while only being a special inspector, secretly works for SEELE investigating NERV's true intentions. He is always called by his last name, Kaji. During college, he had a serious relationship with Misato, but after having long broken up, they see each other again on the UN fleet ferrying Unit 02 and its pilot, Asuka Langley Soryu, to Japan.