There are no wrong answers, only your opinions 🙂
Personally, I think an anti-hero is a bad guy that does good things. He might cheat on his wife, steal, gamble, etc, but when it “matters,” he ends up on the side of what’s good.
Han Solo is an example that comes to mind.
An anti hero is someone who’s TECHNICALLY (caps because they really push the limits of that technicality) doing heroic things but does so in the most questionable heroic ways.
Deadpool: Shoots opposition in the face and several other body parts while laughing and quiping about it. Then shoots the corpse to set up a joke.
Harley Quinn: Actively chooses to let her hyenas rip you apart instead of killing you herself because you were cruel to animals so lol at your screams.
Jack (Mass Effect 2/3): Will do the most fucked up shit to your entire body, insides and outs, and then power slam you into a singularity because she got dragged into Shepard’s nonsense and she just wants to go back to her fucking bed.