One of the most mysterious people on the hit “Glee” is the guy who sits mute behind the piano. The actor is Brad Ellis.

“He played the
piano when we did all the auditions for all the kids, 
and he was very cool,” show creator Ryan Murphy says. “And we put him in black, and he
 sits there, and I’ve only given him one direction, which 
is: ‘You hate those kids.’ ”

“That’s all I’ve ever said to him, and he hasn’t had any
lines yet, but we have a whole backstory where he goes
home and does voodoo dolls. He hates those kids. So 
watch the show from now on and you see shots of him, 
he’s purposely glaring at them. That’s his only 
direction that he’s received to date.”

Essentially, Murphy says, “he’s a very low-paid teacher at
the school who is like a part-time helper.”

So far, he’s said nothing on the show, and may never do so.

“He might say, ‘I 
hate those kids.’ I don’t know. By season eight, maybe, if
 we’re so lucky.”