Short answers, pulled from the story.
The Seattle Seahawks won their first Super Bowl on the 2nd of February 2014, defeating the Denver Broncos 43-8 at Super Bowl XLVIII. The victory was led by head coach Pete Carroll and the Legion of Boom defense, which was widely recognized as one of the best defensive performances in Super Bowl history.
Seahawks fans are called the 12s because the team retired the number 12 on the 15th of December 1984, as a tribute to their supporters, honoring the crowd as a 12th player on the field. The team originally used the term "12th Man," but after a trademark dispute with Texas A&M University was settled in 2006 and the licensing agreement expired in 2016, the Seahawks shifted to calling fans "the 12s."
The Beast Quake run was Marshawn Lynch's 67-yard touchdown run during a 2010 Wild Card playoff game against the New Orleans Saints, in which he broke nine tackles to clinch a 41-36 Seahawks victory. The crowd noise inside Seattle's stadium was so intense that seismic equipment around the city recorded a small earthquake just above magnitude 2.
Paul Allen purchased the Seattle Seahawks for $200 million from Ken Behring and Ken Hofmann in 1997. Allen, the Microsoft co-founder, owned the team until his death in October 2018 following a prolonged fight with cancer, after which the Allen estate managed by Jody Allen retained ownership.
Seattle Seahawks fans set the Guinness World Record for the loudest crowd noise at a sporting event twice during the 2013 NFL season, first reaching 136.6 decibels on the 15th of September 2013, against the San Francisco 49ers, and then 137.6 decibels on the 2nd of December 2013, during a Monday Night Football game against the New Orleans Saints.
The Seattle Seahawks have appeared in four Super Bowls: Super Bowl XL in 2005, which they lost to the Pittsburgh Steelers; Super Bowl XLVIII in 2013, which they won 43-8 over the Denver Broncos; Super Bowl XLIX in 2014, which they lost to the New England Patriots; and Super Bowl LX in 2025, which they won 29-13 over the New England Patriots.