The 27-year-old 'Born this Way' hitmaker, who has repeatedly spoken out against bullying, has been accused of unpredictable behaviour which has seen her lash out at her staff for no reason, reported Contactmusic.
One former crew member who worked on her 'Monster's Ball' world tour between 2009 and 2011 said, "She would have a prayer circle before each show. One night she just suddenly turned on one of the backing singers, branding her unprofessional and ungrateful.
"She crucified her in front of dozens of people - she skinned this girl alive. It was so painful to watch - and no, you couldn't step in. She offers support to her fans who are victims of bullying and calls them her monsters - but she is a bully and a monster herself.