Commissioner of the GBL

The Commissioner of the GBL is the chief executive of the Greatian Bladeball League (GBL) and its minor league affiliates. Under the direction of the Commissioner, the Office of the Commissioner of Bladeball hires and maintains the sport's referee crews, and negotiates marketing, labor, and television contracts. The commissioner is chosen by a vote of officials. The current commissioner is Jake Magnuson, who assumed office in 2018.

List of Commissioners
There have been six Commissioners, including Kreasi Kornblatt, inventor of bladeball itself.

James Hardie
James Hardie (1901–1955) served as the first Commissioner, from 1947–1955. He founded the GBL, and was a long-time associate of Kornblatt, helping him create the sport. Kornblatt chose Hardie to serve as the first Commissioner. He served for 8 years (9 seasons) until his death in 1955, at the age of 54.

Kreasi Kornblatt
Kreasi Kornblatt (1913–1993), the inventor of bladeball, took over as Commissioner after Hardie's death in 1955. He served from 1956–1989 (33 years), by far the longest of any Commissioner. After his death in 1993, it was determined that a Commissioner could now serve a maximum term of 9 years (10 seasons) before he/she must be replaced.

Alex Kaplin
Alex Kaplin (born 1958) served as Commissioner from 1990–1999. He served during the death of Kornblatt, and arranged a special ceremony in honor of Kornblatt after his death in 1993. He suspended all bladeball games between June 3–6, 1993, in honor of Kornblatt.

Mike O'Stern
Michael "Mike" O'Stern (born 1964) served as Commissioner from 2000–2007 (8 seasons). He served during the 2000–2004 New Nate Rockers dynasty. He was impeached and removed from office in 2007 following sexual assault charges. He was replaced by Valeria Giddings.

Valeria Giddings
Valeria Giddings (born 1976) served as the Commissioner from 2007–2017, following Mike O'Stern's removal from office. In 2017, due to budget cuts, she eliminated several teams and altered the schedule format. She was the first female Commissioner. She was succeeded by the current Commissioner, Jake Magnuson.

Jake Magnuson
Jake Magnuson (born 1987) is the current Commissioner of the GBL. He assumed office in March 2018. During his time as Commissioner, many teams have either relocated or old teams have returned. He also allowed the formation of the Leagues and Divisions, changing the schedule format almost completely. Many fans despised these changes, but in a statement, Magnuson said that the changes were necessary to carry Bladeball into the modern era.