I hate tieflings and don't use them, but i LOVE every word of this masterful post! My favorite kind of "30" compilation. Chock full of plot hooks and fascinating details, and scrumptious personalities (can personalities be scrumptious?).
The 'Gifts' are a great addition!
Awesome! I thought all thirty (actually 31, considering the twins) were very colorful and unique. What I particularly liked was that you were able to really capture these characters without having to go into exhaustive detail or backstories; making them highly usable on a moment's notice. Some of these guys'll definitely make it in my campaign.