Those circumstances threatened to wipe out the entire future McFly family.Marty began meddling in the relationships between his teenaged parents-to-be in order to ensure his own existence by having them get together at the Saturday night ""Enchantment Under the Sea"" dance and fall in love.The lavish event was also to honor the return of African big-game hunter-explorer Captain Jeffrey T.Spaulding (Groucho Marx, portraying his most celebrated character).The guests also included two partners: a musician hired to play, Signor Emanuel Ravelli (Chico Marx), and an individual known as "The Professor" (Harpo Marx) who spent much of his time pursuing a blonde." To the tune of "Bad Reputation" by Joan Jett, Shrek and the Donkey easily vanquished the armored knights, and Shrek was announced as the town""s champion, who would now have the "honor of embarking on a great and noble quest.After he fell from his perch into a large spider web, he was assaulted by a giant spider with fangs and wrapped up (or cocooned) in the sticky web spun by the hungry creature.