Golnak

Golnak is a short and squat Orc, prickly in personality, who never forgets a slight against him. Less than social, he spends his time in the forges, ever honing his skills in crafting armor and weapons for Utgar's forces. His choice of mount is fitting--a Stegosaurus: fat, short, and ugly like himself. This monster also shares his defensive nature--when confronted, it will lash out with its 4-feet-long tail spines, impaling would-be attackers with extreme prejudice. And thanks to the tailor-made armor Golnak equips it with, this Stegosaurus is extremely resistant to damage, tanking hits that would fell even other large dinosaurs.

sources:
https://www.thingiverse.com/thing:4543418
https://www.thingiverse.com/thing:3516170
https://www.thingiverse.com/thing:5834432
https://www.thingiverse.com/thing:5945410
https://www.thingiverse.com/thing:4346088
https://www.thingiverse.com/thing:4379063
https://www.thingiverse.com/thing:6986978