Esther; she did what God would have her do, without worrying for herself. Although she did worry for her family - but I think that's natural for any woman.
I would love to be like her, but I doubt I could ever have enough courage.
The other is Mary - Jesus' mother, for much the same reason. How brave she must have been! She had to have known the ridicule she would face. But I don't know if she had any idea what raising the Son of God would be like. And did she know that she would have to give Him up in such a violent way? It must have been a terrible road for a mother. Because although he was Messiah, he was still her little baby, too.