Joker

Joker (from Fire Force, also known as Enen no Shouboutai) is a mysterious Third Generation pyrokinetic and a self-proclaimed anti-hero. He formerly served as an assassin for the Holy Sol Temple's shadow group under the codename "52" (or Five-Two). After experiencing an Adolla Link vision and losing his left eye in the process, he became obsessed with uncovering the hidden truths of the world, no matter the cost or methods.

He's known for his sadistic, mischievous, and manipulative personality, often wearing a constant menacing grin while working behind the scenes. He acts as a self-appointed guardian to Shinra Kusakabe (the Fourth Pillar), providing cryptic guidance, intel, and occasional assistance to Company 8—though his true loyalties remain ambiguous and driven by his pursuit of "truth" over morality.

Physically, he's a tall, well-dressed man with long black hair, a distinctive concentric-circle iris in his visible eye, and a bandana or eyepatch covering the other. He's highly skilled in hand-to-hand combat, knife fighting, and fire manipulation (including lighting cigarettes with his powers).