Yeah, it's a Halo inspired poem. I'm sure there are plenty of other ones, but I don't really care. This is my first shot at writing poems so I thought I should stick to something I know about 
Anyway, gaze in wonder at it's badly made rhymes
The grunts they like raindrops fell,
As the master chief he paves the way.
Many an Elite and Brute he must slay,
As they usher forth from their alien hell.
The Banshees and Ghosts they are not meek,
They are as strong as steel and equally sleek.
But even as all that is great must fall,
The Warthog it comes and destroys them all.
And the Master Chief he rides this beast,
As without it he is slow.
But for the warthog this is just another feast,
This we all should know.
The Master Chief cannot be stopped,
Of that you can be sure.
He is the beacon of light for the human race,
To illuminate the darkest sewer
Anyway, there you have it. Any...suggestions or advice would be very helpful. I started with this
a
b
b
a
sort of pattern but somehow couldn't quite stick to it after those first 4 lines. Then it started sounding sort of badly writen and cliche
Also for some reason the formatting is kind of messed up. It is supposed to be divided into 4 line blocks but the first 3 are all fused together...