Greg's father, Bill Foster, abandoned him. His mother was Liz Foster and his two siblings were Snapper Foster and Jill Foster. While Snapper was putting himself through medical school with a part-time job, he was also contributing to Greg’s law school tuition. Chris Brooks, Snapper's girlfriend, moved out of Snapper's house and went to work for Greg at Legal Aid. When Chris discovered that her father was financing her salary, she quit which disappointed Greg who had fallen in love with her. Greg overcame his feelings for Chris and fell in love with Gwen Sherman. Shortly before their wedding, Greg discovered that Gwen was a prostitute. They postponed their marriage and Greg tried to help lead Gwen out of prostitution.