Kentucky embodies the Kentucky rifle, an improved form of the Pennsylvania rifle used in the American Revolutionary War. This historical firearm also saw action with rifle units in the War of 1812 Battle of New Orleans, contributing to a significant victory. Its defining feature was the rifled barrel, enabling high accuracy at the cost of longer reload times compared to muskets.

Kentucky appears as a young male with fair skin and an average height of 175 cm (5'9"). He has tan shoulder-length hair, typically worn in two high pigtails secured with colorful cords, complemented by loose chin-length sidelocks. His eyes are naturally brown, though he frequently wears pink contact lenses, and he is often depicted with a confident grin.

His personality is bold and self-assured, frequently expressing confidence in his marksmanship. His motto emphasizes achieving objectives with a single, precise shot, reflecting the rifle's historical accuracy. Kentucky shows enthusiasm when others admire the artistic decorations on his rifle form, indicating an affinity for aesthetics and craftsmanship. Outside combat, he pursues artistic hobbies and expresses fondness for dogs and the dish "Hot Brown."

Within a dystopian setting where antique firearms manifest as humanoid "Noble Musketeers" resisting a tyrannical World Empire, Kentucky operates as part of a resistance movement. He collaborates with other firearm personifications like Brown Bess, Charleville, and Springfield in combat against modern military forces. His combat capabilities include utilizing the collective power "Supreme Nobility" (Zettai Kōki) for coordinated special attacks. This power connects to the "Soul Weapon" (Shin Jū) concept, representing the musketeers' spiritual armaments.

Kentucky maintains unwavering loyalty to an unseen "Master," the entity who summons the Noble Musketeers, mirroring the master-servant framework of his origin. His interactions with fellow musketeers occur during missions and leisure activities.