[@edgeout]
God Emperor is a final boss mech. One of the most overpowered in the entire setting. It's also slow as hell, has no melee attacks, and is built entirely around eating a million bullets and oneshotting anything and everything with a ridiculously powerful arsenal of missiles, lasers, and miniature black holes. On top of that, it's virtually unique. Only one encounter has them in most games, and it's usually either the final boss or a postgame fight.

I'm really struggling to see how that profile fits the idea of a fast assassin robot with a mix of ranged and melee attacks.

[@Windicator]
Just pointing out, God Emperor does actually have a semi-nerfed version called [url=http://medarot.meowcorp.us/wiki/Imagine_Kaiser]Imagine Kaiser[/url], though it's still a ridiculously powerful postgame medabot. It looks pretty badass, too.