Engi-con, HawaiiA giant mechanical beast with two legs hummed to life as it stood up.
The fresh hydraulics could be heard as it raised to a full stand.

As soon as it came to a full stand, a man emerged from the hatch at the very top of the vehicle and began to speak.
"This mechanical marvel is called the Mantis. This powered exoskeleton is equipped with armor plating, energy shielding, and two weapon pods on each side.
The armor plating is made of a light-weight titanium alloy that is capable of protecting against even heavy caliber weapons and plasma, while the shields are capable of shrugging off bullets and covers every square inch of the vehicle.
As for the shield's power consumption, the Mantis has an experimental on-board fusion reactor that not only powers the shields, but the whole entire system.
As for the weapons, the Mantis carries an M655 20mm HMG/AM machine gun capable of shredding tank armor like cloth, and an M5920 35mm SGML/AM rocket pod module capable of housing five missiles at a time.
The machine gun can house up to 50,000 rounds and the rocket pods take rockets from it's storage bay and reloads the pods whenever needed, so one doesn't have to worry too much about running out of ordinance any time soon.
The one of the best parts is the fact that you can detach the "arms" and put a different weapon onto it.
So far, we're planning on making other attachments such as plasma cannons, lasers, railguns,... you name it, we're probably already developing it.
The gyro-system is so advanced that one could even stomp and jump without falling over.
The Mantis can house up to one person and is very light weight, despite the fact that its dimensions are 6x12x25 feet.
This beast is only 4,500 lb, so it's very easy to ship one out to where it's needed.
And that, my friends, is the Mantis. Any questions?"