Italics indicate developers who have worked on both Xenogears and Xenosaga.

Key Xenogears staff members

Scenario Writer: Tetsuya Takahashi
Script: Masato Kato
Main Programming: Kiyoshi Yoshii
Music Composition: Yasunori Mitsuda
Character Design: Kunihiko Tanaka
Mechanical Design: Junya Ishigaki
Co-Character Design: Tsutomu Terada, Tadahiro Usuda
Co-Mechanical Design: Yoshinori Ogura
Art Director: Yasuyuki Honne
Chief Artistic Design: Koh Arai
Kernel Program: Koji Sugimoto
Original Storyline Ideas: Kaori Tanaka
Executive Producers: Tetsuo Mizuno, Tomoyuki Takechi, Hironobu Sakaguchi
Production Manager: Tadashi Nomura
Producer: Hiromichi Tanaka
Director: Tetsuya Takahashi

Known Xenosaga staff members

Music Composition: Yasunori Mitsuda
Character Design: Kunihiko Tanaka
Production Design: Junya Ishigaki
Co-Production Design: Kouichi Mugitani, Takumi Sakura
Art Director: Yasuyuki Honne
Screenplay: Sei Sato
Programming Director: Toshiaki Yajima
Producer: Hirohide Sugiura
Executive Producer: Masaya Nakamura
Story & Directed by: Tetsuya Takahashi