Shane Oman is a student at North Shore High School. He is also a part of Varsity Jock clique. Shane was in a relationship with Regina George which started out secretly whilst she was dating Aaron Samuels. After Regina and Aaron broke up, Shane and Regina are together and they stay together the whole movie. After Cady tries to make Regina gain weight, Shane tells her the truth about what the Kalteen Bars really do.
Later, Shane won the award of Spring Fling King.