Gordie is Sabrina's nerdy classmate at Westbridge High School. Sabrina first met Gordie at the Westbridge Science Club and the two remained acquaintances for three years of high school. Gordie also had a short lived relationship with Sabrina's friend Valerie, however it couldn't have gotten too serious since Valerie moved to Alaska not long after.
Gordie is the student chosen by Roland to be the host for Salem Saberhagen's essence when he wishes to be a human. Salem's contrastingly extravert nature helps Gordie and Valerie's relationship along a little.
Gordie does not return in the fourth season and no explanation is given for his absense.