Short answers, pulled from the story.
The Minnesota Vikings have appeared in four Super Bowls: IV, VIII, IX, and XI. They lost all four, to the Kansas City Chiefs, Miami Dolphins, Pittsburgh Steelers, and Oakland Raiders respectively.
The Minnesota Vikings were officially founded in January 1960, when the ownership group was awarded the NFL's 14th franchise after walking away from a prior commitment to the American Football League. The team began play in 1961.
The Vikings' horned helmet and purple-and-gold uniforms were designed by Karl Hubenthal, a cartoonist at the Los Angeles Examiner. Hubenthal also created the original Norseman logo.
The Minneapolis Miracle refers to a walk-off game-winning touchdown by wide receiver Stefon Diggs in the 2017 NFC Divisional Round against the New Orleans Saints. With under ten seconds remaining and the Vikings trailing by one point, quarterback Case Keenum threw to Diggs, safety Marcus Williams missed the tackle, and Diggs ran untouched into the end zone. Radio announcer Paul Allen on KFAN 100.3 coined the name on the call.
The Purple People Eaters were the Vikings' dominant defensive line of the late 1960s and 1970s, anchored by Alan Page, Carl Eller, Gary Larsen, and Jim Marshall. In 1971, Alan Page won the Associated Press NFL Most Valuable Player Award, becoming the first defensive player to receive that honor.
The 1998 Vikings finished 15-1 and set a then-NFL record with 556 points scored, but lost the NFC Championship Game to the Atlanta Falcons 30-27 in overtime. Kicker Gary Anderson, who had not missed a single extra point or field goal attempt all regular season, missed a 38-yard attempt with just over two minutes remaining, allowing Atlanta to tie the game. The Vikings became the first 15-1 team in NFL history to fail to reach the Super Bowl.