Returned Retired mechinery

This is based on retired mechinery who died by his comrades hands when the world was at the near end he gains mysterious powers by unknown and returns back to time for his revenge will he successfully comple his mission or will die.

[Kim Jong sung] haa..haa..haa looks like I filed this mission I didn't think I would be betrayed by my own comrades whome I with thin and thick . (Chen yungping) this is where your miserable life end brother Jong sung we cannot defeat it no matter how many times we try all our commrades died by its hand 'sorry' please die for me so that we can die together !!! *Blast* its funny all my memories are coming together for my last moment !!! *Tap*Tap* Tap* !!!!? Don't you need power for revenge accept my hand I will give you power beyond the humans ever had I reached his hand and suddenly every thing wend dark and I was reborn as a baby again I will not waste this life no matter what first I need money for my plan and connections thats my first task ok *burp* !?what happened this is poop I actually forget I was still baby afterall but this is damn embarassing.