18. Seattle Seahawks (2012–2015)

The Seattle Seahawks forged a formidable legacy with their Super Bowl XLVIII triumph and back-to-back NFC championships, anchored by the legendary Legion of Boom defense. Led by coach Pete Carroll and quarterback Russell Wilson, the Seahawks combined aggressive, physical play with an electrifying home-field advantage at CenturyLink Field. Their suffocating defense and dynamic offense made them perennial contenders and set new standards for team toughness. Seattle’s brief but dominant stretch remains one of the most impactful in recent NFL history. Learn more about their rise at The Seattle Times.