created by (325 episodes, 1997-2023)
written by (325 episodes, 1997-2023)
creator (2 episodes, 2015)
written by (24 episodes, 1997-2023)
developed by (283 episodes, 1997-2023)
staff writer (79 episodes, 1997-2002)
written by (9 episodes, 1998-1999)
staff writer (56 episodes, 1998-2001)
written by (7 episodes, 1998-2000)
staff writer (55 episodes, 1999-2002)
written by (1 episode, 1999)
staff writer (17 episodes, 2001-2002)
consultant writer (5 episodes, 2008-2009)
staff writer (15 episodes, 2001-2002)
staff writer (11 episodes, 2005)
(13 episodes, 2005-2012)
writer (1 episode, 2012)
staff writer (11 episodes, 2002)
staff writer (5 episodes, 1997-1998)
written by (2 episodes, 1997)
staff writer (3 episodes, 1997-1998)
written by (2 episodes, 1997-1998)
staff writer (4 episodes, 2002)
staff writer (1 episode, 1997-1998)
consultant writer (1 episode, 2006)
additional material written by (1 episode, 1998)
staff writer (1 episode, 1997)
consultant writer (1 episode, 1998)
written by (1 episode, 1998)
written by (2 episodes, 1998)
staff writer (1 episode, 2002)
staff writer (1 episode, 2001)
writer (1 episode, 2006)
written by (1 episode, 2023)
consultant writer (uncredited) (2 episodes, 2007)
contributing writer (uncredited) (1 episode, 1998)
novel (uncredited) (1 episode, 2000)
(uncredited) (1 episode, 2010)