Relationships

Pre Cursors has these relationships to other tropes:

parents kids shares a parent with:
Abusive Precursors
Advanced Ancient Humans
Ancient Astronauts
Benevolent Precursors
Neglectful Precursors
Ultraterrestrials
You'll need to Get Known if you want to add or modify these relationships.
http://tvtropes.org/pmwiki/relationships.php?t=PreCursors