Most of my sisters have nicknames (not official chapter ones) because of something they've done or for powderpuff jerseys.
Powderpuff is big at my school (even with only 4 sororities) and our shirts proudly state our nicknames and numbers on the back.
I play center on offense and defensive line (normally in the center of that as well). My nickname was given after my first game due to my "abilities".
I am known as "KILLA" and am #8!
*Just want to add that I have never physically harmed anyone.