Tyranitar, my favorite Pokemon, like the mountains it destroys, got better, peaked, then went down.
GSC started decent enough. Pretty neutral.
Backsprite is pretty cramped as you do in the early gens. Wouldn't be surprised if someone confused it with Scyther, for example. Spikes take up too much room.
Gen 3 it was pretty cool, but the head was at this weird awkward angle. But the backsprite is great and proportional.
Gen 4 was pretty much perfect. At least for the front sprite.
Backsprite is kinda awkward...there is more room in Gen 4, yet it still feels cramped. The top spike/horn looks like an eyebrow which is just way too weird.
Within the same gen, HGSS decides to create an all-new sprite that is just worse. The DPP sprite perfectly used angle and perspective to hide the shortness of the arms. HGSS decides to EMPHASIZE the derpiness of the shortness of the arms by having it swing them up and down in some bizarre animation.
With Gen 5, we double down on the derp. Now its mouth is perpetually hanging open and it's rocking its head back and forth like a braindead idiot. The eyes stay in that blank stare no matter where its head moves.
Remind you of anything?
However, it's saved by the backsprite which I think may be the best one so far. They close the mouth and give it a stoic, intense stare.
But...even then they can't leave well enough alone. BW2 brings us this horrible monstrosity:
The derpface is back, the perspective makes it look like it has hillbilly buckteeth, and they even decided to make the hips super thicc. I have no idea why they can't leave well enough alone. It was even sadder to experience this firsthand as I never played BW1, and Bulbapedia listed the backsprite as the same for BW2. So "imagine my shock" when I transferred my beloved Rachel the Tyranitar, looking forward to seeing the great BW1 backsprite and being confronted with this monstrosity.
Nowhere to go but up, really, XY and onward is pretty okay. Like a lot of the 3D models, it lacks anima and personality, but I'll take the stone-cold stoic look over the derp face every time. At least the attack animations look cool (Ice Beam actually comes out of its mouth now!!).
The backsprite is cool too. Glad the face is mostly obscured.