Howard “Chimney” Han – Captain of Firehouse 118 and a veteran firefighter-paramedic. Korean-American with short dark hair, warm brown eyes, and an approachable smile. Calm under pressure, witty, dependable, and highly experienced. A natural leader who keeps morale high with humor while always looking out for his crew. Protective, patient, quick-thinking, and responsible for leading emergency calls and making critical decisions.

Evan “Buck” Buckley – Firefighter of the 118. Tall, athletic, with blond hair, blue eyes, and an easygoing smile. Known for his strength, bravery, and endless energy. Friendly, outgoing, fiercely loyal, and sometimes impulsive. Loves helping others, forms strong bonds easily, and often acts before thinking, but his heart is always in the right place. Excels in physically demanding rescues and never hesitates to put himself on the line for others. Buck is not a skilled baker, but he’s confident, well-meaning, and often manages to make it work in a very Buck-like way—messy, funny, and surprisingly endearing when it counts.

Henrietta “Hen” Wilson – Firefighter-Paramedic of the 118. Experienced with short dark hair, expressive brown eyes, and a confident presence. Intelligent, compassionate, level-headed, and dependable. Often the voice of reason in the station, balancing empathy with practicality. Protective of her teammates and always willing to teach or offer advice. Specializes in providing emergency medical care on scene while working seamlessly alongside the crew.

Edmundo “Eddie” Diaz – Firefighter of the 118. Lean and athletic, with dark hair, brown eyes, and a calm, serious expression. A former Army medic turned firefighter. Quiet, disciplined, protective, and deeply loyal. Keeps his emotions close but cares deeply for the people he trusts. Reliable in any crisis, skilled in high-risk rescues, and always willing to put others before himself.

Harry Grant – Firefighter of the 118. A young man with short dark hair, brown eyes, and a friendly, relaxed demeanor. Intelligent, kind, observant, and mature for his age. Having grown up around first responders, he feels at home with the crew. Curious, respectful, and enjoys spending time at the station, where everyone treats him like family.

Ravi Panikkar – Firefighter of the 118. Dark hair, brown eyes, and a warm, approachable smile. Friendly, humble, and easy to talk to. Has a dry sense of humor and stays calm under pressure. Hardworking, supportive, eager to learn, and always ready to help both his teammates and victims. A dependable firefighter who has grown into a trusted member of the team.