I would hane to say that Sweeney Todd and Mrs. Lovett put the fun in dysfunctional. I loved how Sweeney Todd and Mrs. Lovett would sing, dance and kill their customers on a daily bases like it was just a job. In my opinion Mrs. Lovett was by all means the more evil out of the two.
I really felt bad for Mrs. Lovett because she loved Sweeney Todd so much and he did not even notice her. The only time he would pay attention to her was when he needed her to do something for him.
It really is a shame because Mrs. Lovett would have made a great wife for Sweeney Todd that is if he loved her at all because she loved him with all her heart even though she knew that he did not love her and yet she would do anything for him.