All my characters are my babies, even the ones who are older than me. I would never make a character which I hate with a passion or out of pure spite. I still have bad/evil characters, but I do not make straw men.
A lot of my older characters are based off of other characters in media. Some are more obvious. And some are more harder to guess. Most of my newer characters are just random.
In some ways I feel like I have a sort of a twisted reality for my characters. Someone always has to die, someone always has to suffer from being a cog in a system. Before writing Crow's Worth, I did go through and "save" some people's lives. There were about 6 people who were dead in the original version who are not in the final version.
There are characters who were also completely rewritten. Originally Miss really loved her mother, a woman who died shortly after fleeing her home country with her kids. In the current version, her mother is less saintly and less dead.
The characters Shoo-Fly and Crow's father were completely rewritten. There were other characters who I debated on making very different.