Heather Morris Speaks On Lea Michele’s Mean-Spirited Behavior While Working On Glee:“Many People Were Very Scared” After 12 months of radio silence, Heather Morris speaks up about her co-star's alleged negative personality during all six seasons of Glee. E! reports that it has been exactly a year since the lead character of the hit television series was exposed to have been "mean-spirited" throughout the filming and promotion process. And although Lea Michele has apologized, her former co-stars can't seem to forget those dark times. Heather Morris, who played the role of Brittany Pierce in the show, shared her thoughts on how everything happened the way it did.