Well, I think Evo's Wolverine was mean to be more mellow and relaxed - the older gruff warrior, but mostly over (or never having?) the rage which is normally associated with him; I think McNeill went the way they wanted him too, just as Dinobot was meant to be truly ferocious and angry. Steve Blum plays a great angry berserker type though I agree - his Grunt from the Mass Effect series is a real treat. Agreed about Cathal Dodd - definitive.
Evo's Kitty started out somewhat annoying, but when they toned down the valley girl stereotypes she became a lot better I felt like.