Salling gained 20 pounds (9.1 kg) before filming the pilot episode in order to better embody his football playing character.
In the fourth episode of the third season, Puck and the adoptive mother of his child Shelby Corcoran kiss. Puck is introduced as a football player and bully at William Mc Kinley High School; he is frequently seen throwing fellow students into dumpsters, or tossing slushies in their faces. He is the best friend of Finn, the quarterback, and has a summer pool-cleaning business that leads to sexual encounters with his adult female clients.
Despite that, he sleeps with fellow students, including in an on-again, off-again relationship with Santana Lopez (Naya Rivera), a cheerleader, which does not completely end forever until the middle of the second season.
He supports her in her first solo for glee club and runs her campaign for prom queen.
They are still a couple at the end of the school year.
Puck claims he will be help her to parent their child, but he cannot remain in a committed relationship with Quinn if she refuses to have sex with him; Quinn returns to her original plan of giving the baby to Terri, who is faking a pregnancy to hold on to Will.
Rachel begins to suspect that Puck is the father of Quinn's baby and tells Finn.Finn attacks Puck and confronts Quinn, who admits the truth.Puck again offers to be with Quinn, but she declines and tells him she wants to be alone, though she moves in with Puck's family since her parents had kicked her out and she can no longer stay at Finn’s house.When the glee club holds a bake sale to pay for a wheelchair-accessible bus so Artie (Kevin Mc Hale) can ride with the club to Sectionals competition, it only succeeds because Puck makes a special, popular cupcake recipe—he secretly adds pot, which gives everyone the munchies.He offers financials to Quinn to show he will be a good father and provider; she figures out that it’s the money from the bake sale, and refuses to accept it, though she expresses her gratitude and apologizes for abusing him verbally.Noah "Puck" Puckerman is a fictional character from the Fox musical comedy-drama series Glee.