CLE Monsters

Early years

The Monsters began in 2006 when the dormant Utah Grizzlies AHL franchise was purchased on May 16, 2006, by a Cleveland ownership group led by Dan Gilbert, owner of the Cleveland Cavaliers and Quicken Loans. A new AHL team was awarded to Cleveland following the departure of the Cleveland Barons to Worcester, Massachusetts, after the 2005–06 season. With Quicken Loans Arena established as the team's home venue, the Colorado Avalanche was announced on December 17, 2006, as the franchise's first NHL parent club with a five-year agreement.

The franchise was officially announced on January 25, 2007, as the Lake Erie Monsters, referring to Bessie, a creature of local folklore. The name was chosen from researching focus groups around the Cleveland area and the logo incorporated the geographical connection in the region with Lake Erie.

Former NHL player Joe Sacco was named as the Lake Erie Monsters first head coach and Dave Oliver was named general manager. The Monsters opened their inaugural 2007–08 campaign with a loss at home against the Grand Rapids Griffins on October 6, 2007. The team ended the season 26–41.

At the end of the 2010–11 season, the Monsters qualified for the Calder Cup playoffs for the first time in team history. After gaining a 3–1 series lead over the Manitoba Moose in the opening round, the Monsters proceeded to lose the next three consecutive games, losing the series 4–3.

Blue Jackets era

On April 17, 2015, the Monsters announced the signing of a multi-year agreement to become the AHL affiliate for the Columbus Blue Jackets, which took effect in the 2015–16 season. The multi-season affiliation was extended in 2019.

The Monsters finished the 2015–16 season by setting a franchise record in points (97) and qualified for the playoffs for the second time in team history. On April 23, 2016, the Monsters defeated their first round opponent, the Rockford IceHogs, 5–3, ending a three-game sweep of their opponent in a best-of-five series. The Monsters advanced to the Western Conference Semifinals to play the Grand Rapids Griffins in a best-of-seven series, defeating them 4–2. They then swept the defending Calder Cup Champion Ontario Reign in the Western Conference Finals to reach their first Calder Cup Final in franchise history. On June 11, 2016, the Monsters won the franchise's first Calder Cup in a four-game sweep of the Hershey Bears, with Oliver Bjorkstrand scoring the Cup-winning goal in overtime.

This marked Cleveland's first AHL title since the Barons won their last Calder Cup in 1964, and 10th overall for a Cleveland-based AHL team. The Monsters won Game 4 before a sellout crowd of 19,665 people at Quicken Loans Arena — the second largest crowd for a professional hockey game in Ohio behind the 19,941 in a Cleveland Lumberjacks game against the Minnesota Moose in February 1996, and the second largest in Calder Cup playoff history behind the 20,103 Philadelphia Phantoms game four victory in the 2005 Calder Cup Finals over the Chicago Wolves.

On August 9, 2016, the Lake Erie Monsters changed their name to the Cleveland Monsters. The team's Calder Cup winning head coach, Jared Bednar, was then hired by the Colorado Avalanche on August 25. Under their new name and coach John Madden, the Monsters failed to qualify for the playoffs in the 2016–17 season. In the 2017–18 season, the Monsters earned last place in the Western Conference and failed to make the playoffs. The team returned to the playoffs following the 2018–19 season as the fourth seed in the North Division where they upset the division champion Syracuse Crunch before being swept by the Toronto Marlies in the division finals. Head coach John Madden then left the team and was replaced by Mike Eaves.

The Monsters 2019–20 season was curtailed by the onset of the COVID-19 pandemic. The team ended the season in last place in their division with a record of 24–31. Owing to the ongoing effects of the pandemic, the 2020–21 season was delayed and shortened with no playoffs held in their division. They ended the season in second place within their division.