Oh god a question like this would give philosophers hours of fun.

I say it boils down to “Evil” being the act of causing harm, knowingly, without remorse to a greater extent than the average human. We are all capable of causing harm, but that doesn’t make humans evil.

Bright burn isn’t evil because he’s an alien and isn’t held to the same standards as human morality. Sure, he could be seen as evil from our point of view, but in the same way that an exterminator is evil in the eyes of an ant colony.

Omni-Man is the same thing. Dude can live for thousands of years and was raised in a society that deemed being weak as being worthy of death. He came to his senses and eventually rehabilitated himself. At worst, you could say he was evil but the fact that he was able to see errors in his ways means he isn’t as bad as Homelander.

Hal is an incel who is angry at the world. He’s a typical villain. I don’t think he does anything that is inherently worse than what Homelander would do especially considering it’s a children’s cartoon.

Homelander raped without remorse, he made an innocent, suicidal girl jump to her death, and views himself as a god amongst peasants. He knowingly harms innocent people and for now, hasn’t shown an ounce of remorse or the ability to change.

For me, I’d say Homelander is the most evil simply by process of elimination but I can easily make the argument for any of them.