PHOTOS: 12s Fill Levi's Stadium For Week 11 at 49ers

The 12s are excited for the Seahawks' Week 15 matchup against the Green Bay Packers at Lumen Field on Sunday, December 15, 2024.

The Seahawks retired the number 12 40 years ago to celebrate the most passionate and energetic fanbase in the NFL, the 12s. Take a look at some of the best photos of the 12s throughout the organization's history.

The Seahawks are celebrating the 40th anniversary of the retirement of the number 12 in honor of the best fan base in the NFL so take a look at some of the most notable Seahawks fans.

The 12s are excited for the Seahawks' Week 14 matchup against the Arizona Cardinals at State Farm Stadium on Sunday, December 8, 2024.

The 12s are excited for the Seahawks' Week 13 matchup against the New York Jets at MetLife Stadium on Sunday, December 1, 2024.

The 12s are excited for the Seahawks' Week 12 matchup against the Arizona Cardinals at Lumen Field on Sunday, November 24, 2024.

The 12s are excited for the Seahawks' Week 9 matchup against the Los Angeles Rams at Lumen Field on Sunday, November 3, 2024.

The 12s are excited for the Seahawks' Week 8 matchup against the Buffalo Bills at Lumen Field on Sunday, October 27, 2024.

The 12s are excited for the Seahawks' Week 7 matchup against the Atlanta Falcons at Mercedes-Benz Stadium on Sunday, October 20, 2024.

The 12s are excited for the Seahawks' Week 6 matchup against the San Francisco 49ers at Lumen Field on Thursday, October 10, 2024.

The 12s are excited for the Seahawks' Week 5 matchup against the New York Giants at Lumen Field on Sunday, October 6, 2024.

The 12s are excited for the Seahawks' Week 4 matchup against the Detroit Lions at Ford Field on Monday, September 30, 2024.