Quackula said:

Grevious didn't look cool and acted and sounded like a complete buffoon. He didn't do a single thing in his only movie to make him seem threatening or impressive.

Shit, at least Darth Maul offed a Jedi.

First of all, Darth Maul was the greatest Sith out of all the movies.

Second, according to GL, each movie he wanted to bring in one new nasty character. ESB: Bobba Fett, ROTJ: Jabba/Emperor, TPM: Darth Maul AOTC:Jango Fett/Count Dooku, ROTS: General Grevious

So, that's the general analogy.