A man from the future to help change the past,
He needs to stop impending doom, and he needs to do it fast.
He's from a future where mutants are severely mistreated,
They are marked as monsters, put down, and defeated.
So he has come back in time to the present date
To help the X-men stop a very tragic fate.
He wields a big gun and cybernetic parts,
As well as the power to build anything with his super-smarts.
He's tall, muscular, and pretty cool.
And when it comes to precision, he is not a fool.
Our time-traveling hero with technical aptitude,
Who is the hero that always has a serious attitude?