The M-308 is the lead robot in the NES game Metal Storm.

Codename: Metal Storm
Height: 3 meters
Mass: 952 kilograms
Power Level: 952 kilowatts
Armor: Geopolyum Alloy Weapons: Fusion Rifle, Plasma Beam, Shield Force, or Gravity Fireball
Special Equipment: G-REV Gravity Control Device, Anti-Gravity Unit, Hyper Boosters, Armed Movable Wings, Sensor Array, Night Vision Scope, Thermal Vents
Funtion: All-purpose Combat Robot

The M-308 is a fairly, ah, bulbous robot. It has a bit of waddle when it walks, which fits perfectly with the game's whimsical music.
It could certainly beat the hell out of your cat.