[TOMT] Video game about....zombies

This is probably pointless and the chances of anyone knowing are below 0 but here we go anyways.

When I was younger,about 10yrs ago or so,me and my brother used to play this 8 bit game.I remember that it was a street (looked like a representation of a bad neighbourhood) and the character you played as had spikey black hair,and the whole game was just on that street and zombies came from left and right and you had to fight them,if I'm correct.And I remember that there was this robot that would come and if you destroyed it,the torso would fall and your character could jump in its legs and become half robot.

I've been looking for this game FOREVER.If anyone knows what I'm talking about,please,do tell.I'm starting to think that it was just a feverish dream of mine..