Hahaha funny you should say that, that pixel is actually there to represent his Eyes!
You should move the dark yellow-ish pixel to the other side of his head or remove it altogether. Currently, it looks a bit like his head is on backwards because the pixel looks like hair.
@Fracaro
Honestly, I'd either change to colour of it, or just remove it. Most people don't really associate that colour with eyes. I think most Atari era games that had low-res graphics like this just left the people faceless, anyways. It wouldn't be a huge problem, I think. Regardless, you did a good job with the animation. I wouldn't want to be the one firing that gun, though. My wrists hurt just thinking about it.