Durge

He's a badass.

Despite being made of worms (not unlike these things) Durge is not one to sit there and squirm when theres killing to be done. With his impressive array of weapons and armour (coupled with the fact that he is almost indestructible) Durge has been seen as the fist of the CIS since he was first 'employed' to replace Jango Fett. Durge proved his combat capabilities when he engaged Obi-Wan Kenobi in a duel on Muunilinst, and he personally led the Droid Lancer charge to destroy Republic forces there.

He has many weapons - a lance, two guns, a whip, a chain with a spiky thing on the end, a flamethrower, a wrist mounted dart gun, and two shields. Not to mention the fact that he can grow into a huge squirming mass of tentacles and smash things up when he gets angry.

Also, all he needs to do to destroy a tank is move in front of it and yell. Literally, those Republic tanks must be made of paper - he destroys one with a sharp stick, for goodness's sake.

Despite being cut up and blown to pieces by Obi-Wan and his Clones, Durge did not die and will continue to spread his badassery throughout the Galaxy forevermore.