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Freezer
Since: Jan, 2001
Farmelle
Since: Dec, 2009
TVAddict
Since: Dec, 2010

I know we must have this one, but I'm stuck on what it would be called. The character (most often female) who is the nerd or shy and sweet or otherwise likely to be overlooked socially who becomes the heart or backbone of the group, which is especially protective of her. Although she often proves emotionally stronger than she looks. Willow in Buffy and Kaylee in Firefly are obvious examples.