

Paulie accompanies Rocky and Adrian to Los Angeles, but complains about the flophouse they are staying in, which annoys Apollo. Later, Paulie tries to fight the wrestler Thunderlips, who is strangling Rocky during an exhibition match. Rocky agrees and hires him as a cornerman.

Paulie briefly attempts to fight Rocky, who easily evades him, and the exhausted Paulie finally asks him for a job. Rocky bails him out, but Paulie is still angry, claiming Rocky holds him down and owes him. Wandering around drunk, he walks into an arcade hall, and, after seeing a pinball machine with a Rocky theme, he hurls his liquor bottle at it, destroying the machine. When Rocky, now heavyweight champion, wins a number of succeeding matches and becomes increasingly wealthy and famous, Paulie becomes jealous. Though he is disappointed at the beginning of Rocky's match, he eventually jumps in joy and hugs Adrian when Rocky is victorious. He later helps care for the baby on the night of Rocky's rematch with Creed. He is disappointed later when he sees Rocky training amateurs in Mighty Mick's Gym Paulie visits the pet shop where Adrian works and yells at her for refusing to let Rocky continue his boxing career the stress of the argument causes her to go into premature labor. Later, he recommends Rocky for his former meat packing job he also buys Rocky's car from him after the latter is laid off. After Rocky marries Adrian, he congratulates them. Paulie visits Rocky in the hospital after his title match with Apollo Creed.

Paulie also invited Rocky to begin his unique training method of punching sides of beef at the rendering facility. Paulie introduced his sister, Adrian, to Rocky and generally encouraged their relationship. Rocky describes Paulie in Rocky III as "like a crazy brother".

He also says in Rocky Balboa that "Italian food cooked up by a bunch of Mexicans ain't so special." In response to challenges to fight, his catchphrase is "I don't sweat you", after which he is usually quickly defeated (by Thunderlips in Rocky III, by Rocky himself also in Rocky III, and by Tommy Gunn in Rocky V). Paulie is racist, as seen in Rocky III when he openly stated that he did not like any of the black boxers in the gym where Apollo Creed once trained. If someone insults Rocky in his presence, Paulie usually reacts with anger and withering insults. Though he cares for his friends and family, he is often jealous of their happiness and success and feels they owe him. In Rocky, when Rocky Balboa quits his "collection" job with a local loan shark, Paulie takes his place this mafioso angle was dropped after the second film. He works at a meat-rendering facility and is portrayed as having a drinking problem and tending towards self-pity, immaturity and emotional outbursts. Young was nominated for the Academy Award for Best Supporting Actor for his performance in the first film, along with co-star Burgess Meredith. He is one of only three characters to appear in the first six films. Paul "Paulie" Pennino (played by Burt Young) is Adrian's older brother and Rocky Balboa's best friend, later his brother-in-law when Rocky marries Adrian.
