Some details have emerged about Adam Lambert’s role on Glee, and it appears that he will be a rival for one of the series’ original characters.

“Adam Lambert is joining the show, and he’s going to play my nemesis,” Chris Colfer, who plays Kurt Hummel, revealed during his Wednesday appearance on Live with Kelly and Michael. “I always wanted to see Kurt be mean,” he admitted. “I know no one else does, but it’ll be fun for me.”

Production began on Glee’s fifth season earlier this week, with the cast posting photos of their return to set. “Feels so good to be home,” star Lea Michele tweeted, while fellow cast member Darren Criss posted, “Annnnnnnnnd back to work.” The season will premiere September 26 on Fox.