The team joined the league as the Bullfrogs as an expansion franchise for the 2007 season along with the Battle Creek Bombers.

With the approval of the lease on Joannes Stadium by the Green Bay City Council on September 19, 2006, the Northwoods League and Titletown Baseball Group headed by Majority Owner Jeff Royle was awarded a franchise called the Green Bay Bullfrogs to begin play the following season.

[1] The Green Bay Bullfrogs won the first half of the South Division in the Northwoods League, the first expansion team in the NWL's 14-year history to do so.

Three Bullfrogs players earned Post Season All-Star honors: Kurt Yacko, Danny Meier and Daniel Robertson.

Off the field the Bullfrogs continued to build a substantial fan base, setting numerous new attendance records capped off by a huge sell-out crowd of 2,319 (capacity 2,000).

"A booyah is a communal stew [of] vegetables and less desirable cuts of meat [...] cooked in large kettles.

[7] In December 2020, the Booyah ownership group agreed in principle to sell the team to Mark Skogen.

The sale is pending the transfer of the ballpark lease which requires approval by the Village of Ashwaubenon Board of Trustees at their December 15 meeting.

[8][7] In November 2021, the team was renamed the Green Bay Rockers for the 2022 season to synergize with the ownership/management group plans to host a variety of concerts and other sporting and community events at the stadium.