- John Langley
- (creator) (744 episodes, 1989-2017)
- John Langley
- (created by) (23 episodes, 2001-2016)
- John Langley
- (creator) (744 episodes, 1989-2017)
- Malcolm Barbour
- (creator) (697 episodes, 1989-2016)
- Malcolm Barbour
- (created by) (27 episodes, 2001-2017)
- Malcolm Barbour
- (creator) (697 episodes, 1989-2016)