Photo Credit: NBC Alan Cumming’s beloved X-Men character Nightcrawler is getting a makeover in Avengers: Doomsday. The actor will reprise the role after almost two dozen years in the upcoming ensemble. While the X-Men’s roles are being kept under wraps, Cumming has started to tease what fans can expect from the teleporting mutant. During an appearance on The Tonight Show with Jimmy Fallon, Cumming spoke about how Nightcrawler has changed since h…