Leslie Becktall (aka Sister Theresa)
First appearance The Only Church in Town
Last appearance The Only Church in Town
Portrayed by Markie Post
Gender female
Occupation nun
Face called Leslie the only woman he ever loved. In college, he tried to give her his fraternity pin as a sort of pre-engagement gift. He learned that she had moved away with no explanation. He forced her best friend to take the pin. Fifteen years later, Leslie sent it to Face. He responded by hiring the A-Team, assuming it was a plea for help.

Leslie changed her name when she became a nun, and was called Sister Theresa. She didn't want Face back in her life; she just wanted to tie up loose ends because she thought that she was about to die. Even though she chose to become a nun instead of marrying him, she still prayed for Face every night.