This is not based on Metroid at all…I donno, but I was getting sick of making the same sprites over and over, so I did this:
those are pretty good, nice shading adn what-not except… um. i might be stupid for asking this but, what are they? 
lol, to tell ya the truth, I donno…I think the 1st two are some kind of bomb or something…the last thing ( the one that sucks the most ) is the obvious one, right? Spikes? The others are just something I did out of bordom ( well, they all are! )…