Luka Couffaine is a 17-year-old, pansexual college student of Russian and half-French heritage. He is a sweet, kind, calm, and understanding musician who prioritizes the happiness of others. He likes playing the guitar, tranquility, his father's music, family, friends, honesty, making stringed instruments, and helping others, while disliking injustice, lies, secrets, XY, Bob Roth, and seeing loved ones in danger or akumatized. Skilled in guitar, violin, biking, and Mirakung Fu, Luka stands 5'11 with a slender build, a Roman nose, pale pink lips, cyan eyes, and long black hair with dyed cyan tips and thick forelocks. His civilian look includes a blue graphic band shirt, medium baggy wash jeans, black high-top Converse, spiked black wristbands, a black-and-silver ring on his left index finger, black circular earrings, a silver septum ring, and a silver double helix piercing. His inactive Snake Miraculous is a silver ridged band on his right wrist. As the superhero Viperion, he wears a shiny, deep green, muscular bodysuit with dark turquoise, snake-textured sections on his torso and limbs, vivid cyan accents, and a bright lime diamond scale pattern on his chest. His mask features scale patterns, dark blue vertical lines, angular eye spots, and lime fangs. In this form, his eyes turn spring green, his hair tips become sea green, his septum darkens, and he gains silver snake bite piercings. His active Miraculous becomes a cyan snake bangle on his left wrist, and he wields a lyre. Viperion’s power, Second Chance, allows him to slide the snake head on his Miraculous to mark a moment in time, letting him return to that exact point as many times as needed to correct mistakes.