David Greenwalt was born on October 16, 1949 in Los Angeles, California, USA. He is a producer and writer, known for Buffy the Vampire Slayer (1997), Angel (1999) and Grimm (2011).
Left his position as head writer on Angel (1999) after its third season in 2002 to join the new series Miracles (2003) as executive producer and head writer. But he remained consulting producer on Angel (1999) and stayed in touched with the writing staff in season four.
Since he left Angel (1999) after the third season he has executive produced both Miracles (2003) and Jake 2.0 (2003). He also (2005-2006) he produced and wrote for the TV series Surface (2005).
Returned after two years absence (remaining consulting producer, though) to Angel (1999) when he heard that the show was canceled in February 2004 to direct one last episode (5.20 "The Girl in Question").
Received a Bachelor of Arts Degree majoring in Drama, English and Education from University of Redlands in California.