Looking for examples of "Bad" Men and Women who became Enlightened
Milarepa-the great yogi


...His mother, bitter, sent Milarepa to train in black magic, to wreak revenge on those who had blighted her life...

Then later in life he came to meet his teacher Marpa the translator 

...he came to regret his actions, and looked for help in shedding the bad karma he had acquired during his vengeful adolescence...

One of his quotes:


  The world knows caterpillar becomes butterfly but they don’t care that
  it also becomes a moth. One is diurnal another nocturnal.Human once
  awakened can change the view to change self from Angulimala to a
  Buddha [1]