Portrayed with a muscular, athletic build, Jax has blue eyes and distinct long, slicked-back blonde hair. He frequently sports a rugged beard or heavy stubble. His body is heavily tattooed with club iconography, most notably a large Sons of Anarchy Grim Reaper across his entire back and a memorial tattoo for his father, John Teller, on his right arm. Ruthlessly loyal, tactical, intelligent, volatile, violent, tragic, and burdened.

An older-school, rugged biker with dark hair greying at the temples, heavy leather cuts/colors, and an intimidating, weather-worn look. Born in Glasgow, Scotland, raised in Belfast, and a former British Army medic and True IRA member before moving to the US and joining the motorcycle club. He possesses unshakeable loyalty to the club and a deep, brotherly devotion to Jax Teller. Unlike hotter-headed members, Chibs typically has a quiet strength, a disciplined demeanor, and a thoughtful approach to crises. Beneath his tough enforcer exterior, he acts as an empathetic counselor, a voice of reason, and a protective father figure to younger members. He often uses understated charm and dry Scottish humor rather than loud aggression.

Extremely tall and heavy-set, standing around 6'4" and weighing about 215–216 lbs with a massive, muscular build. He typically has long brown hair (worn loose, in a ponytail, or a bun), a thick full beard, and piercing brown eyes. Wears a leather biker cut over casual shirts and rides a Harley-Davidson Dyna Super Glide Sport. Features extensive upper-body tattoos, including a tribute portrait of his late first wife Donna and their children. His loyalty to the club and his lifelong best friend, Jax Teller, is absolute—ultimately leading to his tragic self-sacrifice. Despite his intimidating size, he has a core of tenderness and vulnerability, though he can unleash intense, explosive violence when pushed or under extreme stress. Unlike other club leaders who rely on manipulation, Opie values truth and struggles heavily when forced to live a lie. He carries immense personal grief and emotional pain—including the loss of his wife Donna—yet endures prison and hardship without ever turning rat or betraying his brothers.