Who is worse Ilay, Zhenya or Caesar?

Guys who saw these works (Passion, Codename Anastasia and Rose's and Champaign) who do you classify as best to worst? If you can, justify it.

I personally like Ilay even though I recognize that he is a monster hahahaha. But Zhenya seemed very cruel to me in that whole scene at the end of S1. Roses Champaign I haven't read the manhwa yet so I don't have an opinion.

I really wanted to understand why I feel some empathy for Ilay even though he did much worse things than other tops that I personally hate (Taeju and Joo, for example).

Note: I only read the manhwas so I don't know what it's like in the novel.

Note²: I'm not trying to cover up any of the characters, I just genuinely don't understand why I consider Ilay to be less bad. Even with all the absurd things he did and knowing that other tops didn't do half of that, I still like him more.

Guys who saw these works (Passion, Codename Anastasia and Rose's and Champaign) who do you classify as best to worst? If you can, justify it.

I personally like Ilay even though I recognize that he is a monster hahahaha. But Zhenya seemed very cruel to me in that whole scene at the end of S1. Roses Champaign I haven't read the manhwa yet so I don't have an opinion.

I really wanted to understand why I feel some empathy for Ilay even though he did much worse things than other tops that I personally hate (Taeju and Joo, for example).

Note: I only read the manhwas so I don't know what it's like in the novel.

Note²: I'm not trying to cover up any of the characters, I just genuinely don't understand why I consider Ilay to be less bad. Even with all the absurd things he did and knowing that other tops didn't do half of that, I still like him more.