While only one episode of Glee has aired, fans are already buzzing about the potential love triangle between Finn/Quinn/Rachel.

But viewers will also need to be an eye on a potential quadrangle among the adults:

There's Will, who is married to Terri; while Emma is clearly pining for Will. Early in the first full season of the show, though, the school's football coach will enter the picture.

Glee fans will meet Ken Tanaka (pictured, played by Patrick Gallagher, who portrays Chow on True Blood), a fairly creepy staff member. The actor told E! News of his character:

"I think you understand where Ken comes from as they go on. You understand where the bitterness comes from, and people may start to like him a little. Ken will keep going [after Emma]. Ken will go after what he wants. The one thing Ken won't do is give up."

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.