9. Songbird
This oversized metallic, mechanical gargoyle is of particular curiosity as it is of unknown origin, all we know is that its purpose is to protect Elizabeth from warring factions existing in Columbia, but even from the player thinking hes intending to harm her even though hes trying to rescue, although we dont even know thats true for sure. Another interesting point to bear is its minor resemblance to BioShocks Big Daddy, which is an indicator of sharing universes and maybe even a glimpse of how this game could lead onto the events of BioShock. Other than the questions that surround this bizarre possessive monstrosity, fighting the Big Daddies will pale in comparison to facing Songbird and will make for some epic battle sequences. All we need now is a conversion power to command it.