Charisma Carpenter has openly spoken out against Joss Whedon in support of Ray Fisher. Charisma worked with Whedon on Buffy and Angel.
She talks about being targeted by Whedon, repeatedly being threatened to be fired, asked if she was going to keep her child, mocking her religious beliefs and called fat while pregnant. This eventually lead to anxiety and trauma which she suffers to this day.
She has participated in Warner's Justice League investigation after years of therapy to realize what happened to her and she felt she owed that to Fisher, a man of integrity. She very much fears retaliation and blacklisting.
Update: Joss Whedon has declined to comment.