Leijiverse

Almost all of the works by Leiji Matsumoto feature fictional characters, vehicles, and locations that appear in different Anime and Manga titles. There is a loose (though highly inconsistent) overlapping within his works that has fostered endless speculation by his readers/viewers. There has been multiple re-telling of certain stories that may hold only some resemblance to past versions.

For most of Matsumoto's works, continuity is not a crucial issue. An appearance of any particular version of the character does not necessarily connect to any previous or following versions.

 Major works that dwell within the Leijiverse:

Captain Harlock

Galaxy Express 999 

Queen Emeraldas

Queen Millennia

Influenced by/Cameo appearances of characters, locations and vehicles: 

Space Battleship Yamato

Interstella 5555