Sari was just a bit too Deus Ex Machina-like. Miko just seems dumb and annoying.
Worst TF: Nightscream
I realize that he had one of the more useful weapon sets of BM, and I really like bats, so he had a lot of potential imo, but they totally ruined him for me when they made him a little emo boy. By the end of BM I was really expecting him to cut his own wrists.
![Doh! #-o](./images/smilies/icon_34.gif)