Hateful Male Leads

I completely love hateful male leads! I know it may sound a bit weird but sadist, cold-blooded male leads fall under my field of interest. By hateful, I don't mean jerk main characters you usually find in romantic comedies. It's more serious than that. Usually Thai slap/kiss lakorns fall under this category and that's one of the main reasons I watch them. The rating has nothing to do with the order. The list is organized in how much I found the leads hateful and awesome.