Batman & Mr. Freeze: Subzero

I saw this movie years ago, but didn't really remember it, and certainly didn't post about it. It is from the old Batman animated series, so the art style is awesome and distinct although everything looks like it's from the 50s which may turn some people off. Mass murderer and brilliant scientist, Mr. Freeze, needs to revive his ailing wife, and if that means he has to kill innocence to do so, so what? It's up to Batman and Robin to stop him. This is an enjoyable enough Batman adventure, but I do get the feeling you're supposed to forget, at least at times, that Mr. Freeze is a mass murder.