Greg Walker is a producer and writer.
Titans
2018 - 2023 • Director
The X-Files
1993 - 2018 • Writer
Extant
2014 - 2015 • Writer
Vegas
2012 - 2013 • Writer
Smallville
2001 - 2017 • Writer
Three Rivers
2009 - 2010 • Writer
Without a Trace
2002 - 2009 • Story
Harsh Realm
1999 - 2000 • Writer
L.A. Doctors
1998 - 1999 • Writer
Man of Her Dreams
1997 • Writer
Gargoyles
1972 • Gargoyle