Gavin (portrayed by Brad Greenquist) is a minor character from the TV series Charmed, appearing in the Season One episode "The Truth is Out There... And It Hurts".
He is a Warlock sent back from the future to prevent a vaccine from being made. According to him, the vaccine will eliminate all Warlocks. When one of his targets, Tanya Parker is rescued by Phoebe, he goes to Prue in order to find Tanya. Phoebe and Piper figure out who he is while Prue finds out on her own using a truth spell. He tries to kill Prue after he told her everything. However, Piper makes it to them in time to freeze him. Eventually, Prue and Piper impale him in his third eye, destroying him. After he dies, he is sent back to the future.