An Angel
A Witch
A Nurse
A Ghost (my hair at the time was.. wavyish it was easy to make me like the girl from The Ring)
One of the Volturi (see: Twilight) It was a Group/Team costume, we were all in full hoods/cloak, pale powder on our faces, blood at the side of the lips. Was fun.
A Cat (not a full costume, just Cat ears over normal clothes)
so many others but these are the best/creative ones I could think of. I, unfortunately, didn't dress every year, just when work/school required it, or if there's a Halloween event. I'll add more if I remember others.
My dream for future Halloween is to be a Scouts soldier from Attack On Titan. I just find it a bit expensive for the resources when I checked. Maybe someday.