Lloyd Addison

 was the Math and Science teacher at Living Legend Academy Charter High School and an old friend of Rupert Giles.

Biography
Lloyd was a "spry fellow" who used to translated string theory from NASA into "honeyed prose". He married Hazel, a woman who had once kissed Giles.

Thirty years later, a high school Math and Science teacher in Los Angeles, he was reunited with Giles, now in a 16-year-old body, and in an undercover investigation about disappearances at the school. After their first conversation, though, Lloyd was possessed by a demon who called Giles "mother".

Appearances

 * Girl Blue, Part One