Annoying title

annoying lead actor too, but I expect the title from someone who's never been humble.

Yes, I’ve always been.

Well, yeah, with the ending they used it just makes him sound kinda arrogant lol. Like, "yeah, man, I'm a boss; I am legend!"

For the book though, and the alternate ending of the film, it turns out that the creatures weren't the bad guys per se. They were intelligent and part of a community, and Neville was essentially the boogieman that was stalking around while they slept, snatching them up, killing them, and experimenting on them (they were attacking him at the end in order to get back a girl he'd kidnapped). Since he was the only human, he was the freakish creature in this world. He was like a monster in their eyes, or the scary figure talked about in old stories. I.e., a creepy old "legend" like Dracula or something, that parents scare their kids with. So the title was really originally meant to have a meaning more akin to: "I'm the monster".

Apparently, they decided to go with the ending they went with because test audiences weren't very keen on seeing Will Smith as a villain. So, they switched it up so that the creatures stayed the bad guys and Smith became a legendary hero for sacrificing his life to give humanity a cure.

From what I understand, for the sequel they're going to go back to calling the alternate, non-theatrical ending canon. Which is sorta weird.