DS1 Vagrant encounter
For those who don't know, Vagrants are really rare enemies that sometimes pop up in your game if someone else died with a bunch of souls/humanity and failed to recover their bloodstain. I've put 100 hours in PTDE and never came across 1, but after about 250 hours in DSR I've seen maybe 7 or 8 in total, all of them "evil" vagrants. To this day I have never come across a "good" vagrant.
For more info, check here:
http://darksouls.wikidot.com/vagrant