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 buy's 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'. However, this trait also leads to some of the funniest lines in the series, such as in Rocky Balboa, where he bluntly states 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 politically incorrect, 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 appears in all six films, and is one of only three stars to appear in all 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. Much of the film's premise is Rocky's grieving over losing Adrian. In Rocky Balboa, it is revealed that Adrian died in 2002, after 26 years of Marriage, she died of Ovarian cancer, and four years before the events of the Rocky Balboa. She appears in the original five Rocky movies. She is the mother of their only child Robert Balboa Jr. Adrianna 'Adrian' Balboa (née Pennino, played by Talia Shire) is Rocky's girlfriend, and later wife.

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