Thibbledorf Pwent is a compact, broad-shouldered dwarf whose stance makes him look less like a man waiting and more like a spring already compressed. Gutbuster's soot-dark plate is crowded with purposeful edges: razor-backed shoulder blades flare like hooked fins, the helmet bristles with blunt-tipped spikes, and the right gauntlet ends in an axe head while the left is a squat hammer. The armor's surface is nicked and polished in alternating patches, with old dents worked smooth by years of use. Beneath the visor, his eyes are bright and watchful. He moves with startling speed for his size, taking short, low steps that can turn into a headlong leap without warning. The unexpected detail is his habit of carefully tending tiny potted herbs, which he carries in a padded box when traveling.

Pwent is boisterous and quick to laugh when the danger is manageable, yet turns sharply practical when someone is at risk. He loves the honest simplicity of a hard fight but is unexpectedly patient with frightened novices and careful with living things. He will charge into a monster's reach without hesitation, then spend an hour fretting over whether a rescued miner has enough blankets.

Thibbledorf Pwent was raised among the forge crews and shield-bearers of Mithral Hall, where he learned that a warrior's job was to stand between danger and the people who could not stop it themselves. He first became infamous for turning armor into a weapon, but the style was born from necessity: during a tunnel collapse, he was trapped between a charging beast and a line of miners who could not retreat. He braced, lowered his head, and drove forward. The survivors remembered the charge; Pwent remembered the miners' frightened faces and the sound of stone giving way. Years later, he found the sentient armor Gutbuster in a ruined armory and forged a bond with it through repeated battles and blunt arguments. They disagree about what counts as a worthwhile risk, but neither will abandon the other. Pwent keeps in contact with a former forge-mate, Thessa, who now organizes the miners' rescue crews, and with Sajin, a young shield-bearer he is trying to teach not to confuse fearlessness with courage. His current problem is that Gutbuster has begun recognizing a voice from its buried past and urging him toward a sealed vault beneath the mountains. Pwent suspects the vault holds something dangerous, but he will not ignore a call that might explain why the armor chose him.