Anti-hero Leads

There is something mentally wrong with all three leads. Both ML's are obsessed with the FL, one is more of a stalker whilst the other is like an unreasonable child with a crush (throwing a tantrum). The FL has a cold personality and seems almost emotionless through out the drama.

Both ML's are anti-hero's, however the main lead is originally presented to be an outright villain often referred to as the "devil".

The ML is originally an outright villain both in the script and after the FL enters the script.

There are three male leads: the ML the SML and the villain. After some point in the story you can say that they all became the bad guy.

Both ML's are anti-hero's, but they are both villainous in different ways. One is an actual psychopath and the other is somehow worse even with a conscious. 

The ML is a gang leader and an outlaw who follows the law. The FL likes to use her fists to resolve issues as well as the law.

The ML is obsessed with the FL and is an outright psychopath and stalker.

Only included this one because the ML actor plays 2 characters and one of them starts off as the antagonist. 

All I'm going to say is that if the FL wasn't the FL she'd be the villain.

None of the characters in this drama were particularily good people. It's only later that you'd see that they're not bad people.

The ML is a literal demon who intends to kill the FL at first.

There are 2 ML's but the character whose name is the title of the drama is a VERY abusive person in every aspect and an outright murderer. He is described to be a child that can kill. The second ML is more strategic when it comes to killing and his entire plot is revenge.

Originally, the ML is not a good person, you can say a bad-boy, but his actions are more over the top and sometimes plain outrageous, especially in the first few episodes, 

The villain in this season is said to be the ML Ya Long (vampire). He doesn't really seem like a bad guy and was actually really good to the FL.

The ML who. is said to be 'good' is actually worse than the ML who is said to be 'bad'.

ML has multiple personalities and one of them, the most dominant alternate personality is obsessed with the FL and is crazy for her. The kind of crazy I love.

SML is a psychopath and killer. I was more interested in him. But, Vincenzo, the ML is definitely the most anti-hero lead here. As in, he is actually really good but doesn't do the most moral things do get what he wants. 

ML is CRAZY

More like an outright villain ML.