Reborn as a Mecha, I Can't Stay Under the Radar

The overworked wage slave only knows how to work, never realizing that his boss is a robot. Earth is the only home of life known to humanity, yet people have no idea it's about to be colonized by Kryptonians. Even on the day the alien beasts invaded, I was still locked in battle with the evil robot big shot.

Don't ask who I am. I'm just a quiet, handsome man. Even reborn as a mech, I'm still handsome!

(Back from work and don't know what to eat? ...How about roasting an alien beast?)