[@Dealdric]
Okay, so there are quite a few issues to be had here, so I'm gonna start listing things.  Don't wanna come off as rude, though this will clearly explain what's wrong and how it's wrong.

1.  The grammar seriously needs to be cleaned up.  Like, [b][i][u][color=ed1c24]SERIOUSLY[/color][/u][/i][/b] needs to be cleaned up, I can't emphasize this enough.

2.  The role needs to be shortened to just Mechanic.  While engineers exist, you've described Cornilius as someone that repairs, not creates.

3.  This is how Corn[b]e[/b]lius is typically spelled.  If that was deliberate, disregard this.

4.  You've described his body as an amalgamation of power tools and some armor in a coat.  Lore-wise, a Cyborg would be a bit clunky, but nowhere near what's been described.  Something like what's in this hider.[hider=Cyborg Example][img]http://suptg.thisisnotatrueending.com/archive/31082387/images/1395873463838.jpg[/img][/hider]
5.  Okay I physically can't say this any other way.  The background is way too choppy and is, quite frankly, cringey.  A lot of elaboration on his past is needed to justify why he's a brain in a machine, why he was cut apart twice on the streets, what went wrong to leave him in constant pain.  Was he a victim of a random crime?  Was it because he had made some enemies earlier in life?

6.  What's caused him to hate those that think less of him?  Is it a violent hatred, or is a passive and repressed thing?

7.  What chemical reason is there for him to rust when scared?

All in all, there's a lot of room for improvement and the character could work in another setting, though this level of augmentation with technology from the 20th Century is damn-near impossible.  I'd recommend either putting him on the back burner or completely rehashing the idea.