#6 - 'Roughouse!'
#7 - 'Mr. Fixit Comes to Town'
#14 - 'Flying Wolves'
#15 - 'Homecoming'
#16 - 'Electric Warriors'
#17 - 'Basics!'
#18 - 'All at Sea'
#23 - 'Endings'
#27 - 'The Lazarus Project, Part One: Predators and Prey!'
#29 - 'The Lazarus Project, Part Three: The Road Back'
#31 - 'Killing Zone'
#98 - 'Fade to Black'