Macaulay Culkin, who played the mischievous Kevin McCallister, was just 10 years old at the time of filming. Now 44, Culkin remains a prominent figure in pop culture, often reminiscing about his childhood role. Joe Pesci, who portrayed the bumbling burglar Harry Lyme, was 47 in 1990 and is now 81, continuing to be celebrated for his extensive career in film.