There really isn't a "bad guy" in Glee.
However, there are characters that are brief antagonists for several episodes at a time.
For the first two seasons, it was Quinn Fabray and Santana Lopez. (Cheerios) For the most part, it is Sue Sylvester who stirs things up. In other seasons, Jesse St. James, and other rivaling teams are the antagonists.
The actor who plays Blaine in Glee is Darren Criss.
Bad Reputation
I read this question while I happened to be listening to her sing firework. But Rachel is the main person on Glee and she has the strongest voice for singing and sometimes, not always she does sing better then everyone else that plays a teenager on Glee. But it is mostly because she is the main person.
they like to have fun and sing to make them feel better and as a hobby. Glee means to be happy and joyful so there's a clue. in a summary glee clubs sing together and like to have fun maybe to take their mind off of things in their life that may be bad.
Season 1, Episode 17, Bad reputation
Bad Reputation - Glee - was created on 2010-05-04.
glee is something where a person laughs with happines!
A gleek is a person obsessed with Glee.
bad romance (chorus glee) and poker face (rachel)
Theatrically
glee
The actor who plays Blaine in Glee is Darren Criss.
Bad Reputation
Shelby looks after Puck's baby in Glee. She is Rachel's real mother.
The person having a baby is Quinn!!
(the guy in the wheelchair?) no
Bad Romance by Lady Gaga is featured in Theatricality, Season 1, Episode 20.