>>27451984Samurott's face is completely different from it's prior 2 evos. Snout, eyes, mouth, nose, all different. Dewott's face is similar to Oshawott's, and beyond that has the same shells and feet. Only thing that transitions during the Dewott phase is facial hair. Otherwise? Samurott is a stand-alone design.
Ampharos has the same face as its prior to evos, and the same ears, hands, feet, and tail. It's basically a sleek, hairless version of Flaaffy. In terms of consistency, the tail and ears/face are characteristic of all 3 stages.
Samurott is basically Dragonite. You can argue that maybe 1-2 characteristics carried over, but otherwise the transition is a little too extreme IMO. First 2 forms are pretty consistent with some changes indicative of evolution, and then a bunch of characterstics are just lost.