Andy Trudeau is a detective. He has a romantic relationship with Prue Halliwell.

Andy, unlike his partner Darryl Morris, seems very open-minded about paranormal activities. When investigating a crime, he is keen to accept the idea that paranormal causes may be at play.

However, when Prue disclosed the fact that she was a witch while Andy was under a truth-telling spell, Andy admitted he couldn't deal with this.