Prep-Man
Each of these were members at one point.
League
Sensei
http://media.comicvine.com/uploads/0/8190/272559-89132-sensei_large.jpg
Deathstroke
http://media.comicvine.com/uploads/10/105740/2055573-mercer_large.jpg
Bane
http://media.comicvine.com/uploads/7/74588/1999394-bane_08_large.jpg
Alpha
http://media.comicvine.com/uploads/3/39189/1164274-alpha1_large.jpg
Cassandra Cain
http://media.comicvine.com/uploads/0/8190/504256-10529_400x600_large.jpg
Kyle Abbot
http://media.comicvine.com/uploads/1/12075/353559-15158-kyle-abbot_large.jpg
Lady Shiva
http://media.comicvine.com/uploads/2/24453/1341920-bopv2_cv6_large.jpg
Merlyn
http://media.comicvine.com/uploads/0/3133/173768-179138-merlyn_large.jpg
David Cain
http://media.comicvine.com/uploads/0/2532/636510-batgirl_05_page_022_large.jpg
vs
League
Sensei
http://media.comicvine.com/uploads/0/8190/272559-89132-sensei_large.jpg
Deathstroke
http://media.comicvine.com/uploads/10/105740/2055573-mercer_large.jpg
Bane
http://media.comicvine.com/uploads/7/74588/1999394-bane_08_large.jpg
Alpha
http://media.comicvine.com/uploads/3/39189/1164274-alpha1_large.jpg
Cassandra Cain
http://media.comicvine.com/uploads/0/8190/504256-10529_400x600_large.jpg
Kyle Abbot
http://media.comicvine.com/uploads/1/12075/353559-15158-kyle-abbot_large.jpg
Lady Shiva
http://media.comicvine.com/uploads/2/24453/1341920-bopv2_cv6_large.jpg
Merlyn
http://media.comicvine.com/uploads/0/3133/173768-179138-merlyn_large.jpg
David Cain
http://media.comicvine.com/uploads/0/2532/636510-batgirl_05_page_022_large.jpg
vs