Yep, the first rabbit represented the one which got killed by a car.
The second one appears in the game cover, and I won't say what he represents because I don't want to ruin this mystery for the people that haven't played/finished this game yet.

Your turn Nora!

Been a long sine I've played it, so I didn't remember a rabbit being overrun by a car. I was thinkng of To the Moon even after only seeing the 1st rabbit, but I really didn't know why it had that red X at the eye, so I guessed it's not To the Moon, but another game with an origami rabbit. But I immediately recognised the 2nd rabbit.
Will upload something soon :)

Yes, it got killed near Johnny' house.
I added the bloody X, to make a reference to that accident.
It's one of the poor animals killed in the game.

Hope it's not too obscure.

Pac-Man?

nope

Could it be "Stealth Bastard"?

Nope

If that's not Love, Hate, and the other ones, it looks a lot like it. :P

It can be that..

Wolfenstein 3D had a level with these ghosts too.

That's it :)

Thanks! Good game, pity I've only played a bunch of levels... Will have to resume it someday. :P

Okay, will try to post something during the day.

I've had an idea, and it was easy to draw. :P

Here it goes!

I feel like this is some kind of psychology test. When I looked at it I went completely blank.