Mike Singletary’s eyes, Jim McMahon’s headbands and Mike Ditka’s mustache. “Sweetness” and “The Fridge.” The 46 defense and the 46-10 massacre in Super Bowl XX. Even more than 35 years later, these names, nicknames and numbers still resonate. Such is the everlasting power and popularity of the 1985 Chicago Bears, a brash, brutal and brilliant cast of characters who forged the most intimidating lineup the National Football League has ever seen. Fueled by a ferocious defense and the highest-scoring offense in the franchise’s 101-year history, Chicago finished 18-1 and captured the club’s first and only Vince Lombardi Trophy. But the…