Godot and Klavier get so much flak for not being overtly antagonistic. AA1 Edgeworth, Manfred, and Franziska are very in your face and very blunt about the fact that they want to you to lose and the client to be declared guilty. Godot, post-AA1 Edgeworth, and Klavier shine because they seem to be more interested in doing their job as a prosecutor than on shooting you down. Godot may claim otherwise, but outside of a few instances, he doesn't show it very well. Simon kind of falls under this category, too, because he seems more intent on being scary and intimidating than being an outright antagonist.
I honestly don't think the series has seen a bad prosecutor outside of the intentionally bad Payne brothers. They each have their own sets of beliefs and way of doing things, which brings a sense of variety to the series.