Need a name for a mech suit!

Alright so currently I'mgiving everyone new kit as it is so outdated it's kinda useless so they have Specter G-9's for fighters, a Warmonger which is used as a cruiser (Space APC). Though I'm just stuck on giving the new mech suit for the Marines in my story a name... Any help is greatly appreciated!

see
http://www.nanowrimo.org/en/forums/science-fiction/threads/48141

I'm looking for something more powerful, I'm calling it a mech but I need a nickname for it which relates it to something powerful...

How about Exo-Suit?

I once created a Heavy Arms Rapid Deployment suit-- a mobile artillery battery that, predictably, because the HARD-suit.

You know, if they were designed to go up against heavy weaponry many times their size you could call them Davids.