At first, Puck seemed like a sworn enemy of the Glee club. He played football and bullied Kurt.

While he still goes back and forth from tough jock to gleeful singer, there's clearly a soft side to this character. He's proud of his Jewish heritage and crushed on Rachel briefly.

He also knocked up Quinn. That was a big mistake.

Puck Quotes

Dude, my bowels have better moves than you.

Puck

Cougar: Is that a nipple ring?
Puck: Yeah. I'm pretty rock 'n roll.

Glee Quotes

I had sex with you because you got me drunk on wine coolers and I felt fat that day. But it was a mistake.

Quinn [to Puck]

Artie: I thought I was over someone, but I still think I have feelings for them.
Brittany: The Clintons?