
Quick answer — Leiji Matsumoto worked on Galaxy Express 999 (Original Creator), Captain Harlock Space Pirate (Original Creator), Galaxy Express 999 (Movie) (Original Creator) and 2 more anime.
Leiji Matsumoto worked on Galaxy Express 999 (Original Creator), Captain Harlock Space Pirate (Original Creator), Galaxy Express 999 (Movie) (Original Creator), Star Blazers: The Quest for Iscandar (Director), Harlock: Space Pirate (Original Creator).