Question: Who had their Houston Aeros debut in the 1973-74 season and is nicknamed "Mr. Hockey"?

Context articles: 1976–77 Houston Aeros season
Macon Whoopees (SHL)
Gordie Howe
1974–75 Houston Aeros season
1972–73 Houston Aeros season
1973–74 Chicago Cougars season
1973–74 Houston Aeros season
1977–78 Houston Aeros season
1975–76 Houston Aeros season
Mike Crowley

The 1976–77 Houston Aeros season was the Aeros' fifth season of operation in the World Hockey Association.
 The Aeros finished first in the West to qualify for the playoffs.
 The Aeros would lose in the semi-finals to the Winnipeg Jets.
The Macon Whoopees are a defunct professional ice hockey team that played in the Southern Hockey League (SHL) during the 1973–74 season.
 Based in Macon, Georgia, the team played its home games at Macon Coliseum.
 The Whoopees were affiliated with both the Houston Aeros and Cleveland Crusaders of the World Hockey Association.
Gordon "Gordie" Howe, OC (March 31, 1928 – June 10, 2016) was a Canadian professional ice hockey player.
 From 1946 to 1980, he played twenty-six seasons in the National Hockey League (NHL) and six seasons in the World Hockey Association (WHA); his first 25 seasons were spent with the Detroit Red Wings.
 Nicknamed "Mr. Hockey", Howe is considered the most complete player to ever play the game and one of the greatest ice hockey players of all time.
 A 23-time NHL All-Star, he held many of the sport's career scoring records until they were broken in the 1980s by Wayne Gretzky, who himself has been a major champion of Howe's legacy.
 He continues to hold NHL records for most games and seasons played.
 In 2017, Howe was named one of the "100 Greatest NHL Players".
The 1974–75 Houston Aeros season was the Aeros' third season of operation in the World Hockey Association (WHA).
 The Aeros qualified first in their division for the playoffs and successfully defended their Avco World Trophy WHA championship.
The 1972–73 Houston Aeros season was the Houston Aeros first season of operation in the newly created World Hockey Association (WHA).
The 1973–74 Chicago Cougars season was the Chicago Cougars' second season of operation in the World Hockey Association.
 The team qualified for the playoff and won two playoff series to make it to the Avco Cup Final before losing to the Houston Aeros.
The 1973–74 Houston Aeros season was the Houston Aeros second season of operation in the World Hockey Association (WHA).
 The season saw the debut of Gordie Howe and his sons in the WHA.
 The team would win the Avco World Trophy WHA championship.
The 1977–78 Houston Aeros season was the Houston Aeros' sixth and final season of operation in the World Hockey Association (WHA).
 The Aeros again qualified for the playoffs, but lost in the first round to the Quebec Nordiques.
The 1975–76 Houston Aeros season was the Aeros' fourth season of operation in the World Hockey Association (WHA).
 The Aeros again qualified first for the playoffs and made it to the Avco Cup Final but lost the championship to the Winnipeg Jets.
 This was the first season that the Aeros played in the Summit after three seasons at Sam Houston Coliseum.
Michael Ryan Crowley (born July 4, 1975 in Bloomington, Minnesota), is a retired American professional ice hockey player.
 Beginning his hockey career with the University of Minnesota, Crowley was drafted 140th overall by the Philadelphia Flyers in the 1993 NHL Entry Draft, while still playing in college his NHL rights were traded to the Mighty Ducks of Anaheim in 1996.
 It was with the Ducks where he played 67 games, scoring 5 goals and 10 assists for 15 points and collecting 44 penalty minutes.
 He also had spells in the American Hockey League with the Cincinnati Mighty Ducks and the International Hockey League for the Long Beach Ice Dogs and the Grand Rapids Griffins.
 He moved on to the Minnesota Wild in 2001, but was assigned to their AHL affiliate the Houston Aeros and after just 11 games for the Aeros, Crowley decided to retire.