The Mime is an interesting character, because she just looks so VULNERABLE. I mean, there are a number of Batman villains who are fairly likable on some levels - Harley being an obvious example - but this is probably the only one who actually makes me want to give her a reassuring hug and make hot chocolate for. And yet despite this vulnerability - which I'm sure is real on some level - she's perfectly capable of shooting you or electrocuting you. It's an interesting mixture, and it's a shame that she's only been used once - if nothing else, silence-based crimes could make for an interesting gimmick.