The Mastiff Mobile Firebase is a mediumweight mech with heavyweight built-in firepower, used frequently as an active defensive unit. It has no flight capability (can't even hop well) and doesn't move very fast. However, when it does get to where it's going, everyone knows. Once they reach their destination, Mastiffs tend to stay put, no matter what the enemy tries to do about it. Few machines without treads are more heavily armored.
The Mastiff can carry 1 class-1 weapon on its back, for use in its free hand.
Incorporated weapons include:
Twin rocket launchers.
Temple-mounted 3cm machine guns
TacNet Anti-ballistics laser turret
"Infernal" LBMS 55 megaton laser cannon
It looks so cute all curled up. "Shhh... don't wake it..."
Mastiff Pilots often like to attack by crushing...
...but sometimes they stab.
The large, densely-armored canister on the back-right shoulder contains the independent targeting computer system for the anti-ballistics laser. Coordinating fire with other units in the area, the gestalt TacNet AI does its best to knock incoming munitions out of the sky before it reaches the Terran Union forces.
Here's the "coil" clamp which holds interchangeable weaponry secure when not in use. Otherwise things like this falchion would flop all over the place.
And the normal spread of shots with various interchangeable weapons:
This shows some of the modifications I've made to the handle of the plasma mace.
I never really liked the chain falchion, but I think it looks great with the Mastiff.