Charles Edward Greene (born September 24, 1946), better known as "Mean" Joe Greene, is an American former professional football player who was a defensive tackle for the Pittsburgh Steelers of the National Football League (NFL) from 1969 to 1981. A recipient of two NFL Defensive Player of the Year awards, five first-team All-Pro selections, and ten Pro Bowl appearances, Greene is widely considered to be one of the greatest defensive linemen to play in the NFL. He was noted for his leadership, fierce competitiveness, and intimidating style of play for which he earned his nickname.

Born and raised in Temple, Texas, Greene attended North Texas State University—now University of North Texas—where he earned consensus All-America honors as a senior playing for the North Texas State Eagles. He was selected by the Steelers fourth overall in the 1969 NFL draft and made an immediate impact with the team, as he was named the NFL's Defensive Rookie of the Year. Greene is credited with providing the foundation upon which Steelers coach Chuck Noll turned the dismal franchise into a sports dynasty. He was the centerpiece of the "Steel Curtain" defense that led Pittsburgh to four Super Bowl championships in a six-year span.

Throughout his career, Greene was one of the most dominant defensive players in the NFL, able to overpower opposing offensive linemen with ease and disrupt blocking. Former teammate Andy Russell called Greene "unquestionably the NFL's best player in the seventies". He is a member of the Pro Football Hall of Fame and the College Football Hall of Fame, and his number 75 jersey is one of only three retired by the Steelers. Greene is also well known for his appearance in the "Hey Kid, Catch!" Coca-Cola commercial, which aired during Super Bowl XIV and solidified his reputation as a "tough football player who's a nice guy".

Early life and college Charles Edward Greene was born September 24, 1946, in Temple, Texas. He played high school football at Dunbar High School in Temple. Despite Greene's talents, the Dunbar Panthers had a mediocre record, and he was not heavily recruited by colleges. His options were limited further due to segregation of the Southwest Conference. He was eventually offered a scholarship to play college football at North Texas State University (now University of North Texas), where he played for Odus Mitchell on the varsity team from 1966 to 1968. In the three seasons he played on the squad, they had a 23–15–1 record. With a per-carry average of less than two yards in his 39 games at defensive tackle, North Texas State limited the opposition to 2,507 yards on 1,276 rushes. Greene was a three-time All-Missouri Valley Conference selection.

In his junior season Greene married Agnes Craft, also a student at North Texas State and the daughter of a Dallas businessman. Tight on money, they were wed at Craft's sister's house in Dallas. Chuck Beatty, Greene's teammate at North Texas and later again in the NFL with the Steelers, served as best man.Pomerantz 2014, pp. 68–69

As a senior, Greene was a consensus pick as a defensive tackle for the 1968 All-America team, earning first-team honors from United Press International (UPI), the Newspaper Enterprise Association, and The Sporting News, among others. His college coach, Rod Rust, said of Greene: "There are two factors behind Joe's success. First, he has the ability to make the big defensive play and turn the tempo of a game around. Second, he has the speed to be an excellent pursuit player." A pro scout said, "He's tough and mean and comes to hit people. He has good killer instincts. He's mobile and hostile."

Nickname While sources agree the name is a reference to North Texas's athletics teams, the Mean Green,.Pomerantz 2014, p. 66. there are conflicting accounts as to how, when, and why Greene received his "Mean Greene" nickname. When he first arrived at North Texas, the university's moniker was the Eagles. In 1966, Greene's first year on the varsity team, the team adopted the "Mean Green" moniker. Two possible origins of the nickname are two separate cheers that supposedly developed independently during North Texas' 1966 game against UTEP. One cheer was by Sidney Sue Graham, wife of the North Texas sports information director. In response to a tackle by Greene, she blurted out, "That's the way, Mean Greene!" Bill Mercer, former North Texas play-by-play announcer, states Graham's thought behind the nickname was the Mean Green defense. Meanwhile, in the student section, North Texas basketball players Willie Davis and Ira Daniels, unsatisfied with the unenthusiastic crowd, began to sing, "Mean Green, you look so good to me". The rest of the crowd soon followed. "After that we did it every game," Davis said. "A lot of people later on started associating it with Joe because his last name was Greene, but it actually started with that simple chant that Saturday night at Fouts Field. And that's the truth."

Although it stuck with him throughout his professional career due to his playing style, Greene himself was not fond of the nickname, insisting it did not reflect his true character. "I just want people to remember me as being a good player and not really mean," he said. "I want to be remembered for playing 13 years and contributing to four championship teams. I would like to be remembered for maybe setting a standard for others to achieve."

As for the “Joe” part of his nickname (since his given name was Charles, not Joseph), that came from one of his aunts. During a 2014 interview with NFL Films, Greene said that his aunt nicknamed him Joe due to his resemblance to boxing legend Joe Louis, who at the time of Greene's birth was in the middle of his 12-year reign as heavyweight champion. "She thought I was hefty and bulky enough to be called Joe Louis," Greene said. "She started calling me Joe, and it kind of stuck."

Professional football career The Pittsburgh Steelers franchise was one of the most downtrodden in the NFL, having experienced many losing seasons before the hiring of Chuck Noll as head coach in 1969.Freedman & Hoak 2009, p. 72. Noll and the Rooney family, which had owned the franchise since its formation, agreed that building the defensive line was crucial to rebuilding the team.Millman & Coyne 2010, p. 45 Thus, they decided on Greene with the fourth pick of the 1969 NFL draft. The selection proved unpopular with fans and media, who were hoping for a player that would generate excitement; the relatively unknown Greene did not appear to meet their expectations. Meanwhile, Greene, who was highly competitive, was disappointed he was picked by a team that had such a reputation for losing. "I did not, did not want to be a Steeler," he admitted in a 2013 interview. Noll saw immense potential in Greene and insisted on drafting him.Wexell, Mendelson, & Aretha 2014, p. 82. Ken Kortas, who had played in all 42 games as defensive tackle over the previous three seasons, was soon traded away to the Chicago Bears to accommodate him on the roster. In a matter of months, Greene established himself as one of the most dominant players in the league at his position. Despite his team finishing 1969 with a 1–13 record, the Associated Press (AP) named Greene the NFL Defensive Rookie of the Year, and he was invited to his first Pro Bowl.

Former teammate Andy Russell called Greene "unquestionably the NFL's best player in the seventies," saying "No player had a greater impact or did more for his team." Greene and coach Noll are widely credited with turning the Steelers franchise around.Pomerantz 2014, p. 58. The Steelers finished 1970 with a 5–9 record and went 6–8 in 1971. Greene was invited to the Pro Bowl in both seasons. In 1972, Pittsburgh finished 11–3 and won its first division title and its first playoff game—the "Immaculate Reception" game against the Oakland Raiders. During the season, Greene tallied 11 quarterback sacks and 42 solo tackles, and he was recognized as the AP NFL Defensive Player of the Year. Miami Dolphins head coach Don Shula lauded Greene, saying, "He's just a super super star. It's hard to believe he isn't offside on every play. He makes the other team adjust to him." By this time, Noll had built a formidable defense. "We have maybe 10 guys now capable of making All-Pro," said Greene in 1972. "I'm just like all the other guys, doing my best in a team effort." With the drafting of defensive tackle Ernie Holmes in 1972, the Steelers assembled what became known as the "Steel Curtain" defensive line of Greene, Holmes, L. C. Greenwood, and Dwight White. Greene was invited to the Pro Bowl for 1973, joining White and Greenwood on the American Football Conference (AFC) roster.

Greene won his second AP NFL Defensive Player of the Year Award after the 1974 season, becoming the first player to receive the award multiple times. That year, he developed a new tactic of lining up at a sharp angle between the guard and center to disrupt the opposition's blocking assignments which he called the "stunt 4-3". His coaches were at first skeptical of the tactic and did not allow him to try it during the regular season. He first implemented the "stunt 4-3" against the Buffalo Bills in the division championship game. It proved to be highly effective, as it impeded Buffalo's blocking, and running back O. J. Simpson managed only 48 yards rushing. The following week, the Steelers faced the Oakland Raiders in the AFC championship game, with the defining match-up being Greene against All-Pro center Jim Otto. At one point Greene, consumed by emotions, kicked Otto in the groin. Later, on a third-down play, Greene threw Otto to the ground with one arm before leaping to sack quarterback Ken Stabler. Oakland was held to 29 rushing yards in the Steelers' 24–13 victory. On January 12, 1975, the Steelers won their first of four Super Bowl championships in a six-year span by defeating the Minnesota Vikings 16–6 in Super Bowl IX. In that game, lined up against center Mick Tingelhoff, Greene recorded an interception, forced fumble, and fumble recovery in what is considered one of the greatest individual defensive Super Bowl performances. Pittsburgh limited the Vikings to only 119 total yards of offense, 17 of which were gained on the ground. After the season, Greene was honored by the Pittsburgh Post-Gazette at its 39th Dapper Dan dinner as Pittsburgh's outstanding sports figure of the year.

Greene missed four games in 1975 due to a pinched nerve, snapping a streak of 91 straight games started since he entered the league. In December 1975, he and the other members of the Steel Curtain appeared on the cover of Time magazine.Freedman & Hoak 2009, p. 83. After leading the Steelers to another Super Bowl win after the 1975 season over the Dallas Cowboys in Super Bowl X, Greene missed the first several games of the 1976 season with a back injury. The Steelers started off the season 1–4 and looked like they would not make the playoffs. Quarterback Terry Bradshaw was also injured and was replaced by rookie Mike Kruczek. Greene returned and the Steelers defense carried the team to nine-straight wins and the playoffs. With a defense considered one of the best in NFL history, the 1976 Steelers held opponents to an average of less than 10 points per game (138 points over 14 games). During their nine-game winning streak, the Steelers defense recorded five shutouts, including three straight, and surrendered a total of 28 points (roughly 3 points per game).Pomerantz 2014, p. 7. The defense allowed only two touchdowns over those nine games. The Steelers were defeated by the Raiders in that year's AFC championship game.