Luka Couffaine is a fictional character from the animated television series Miraculous: Tales of Ladybug & Cat Noir. He is a talented musician and plays the guitar, often expressing his emotions through music. Luka is known for his calm and caring personality, which makes him a supportive friend to the main characters, Marinette Dupain-Cheng and Adrien Agreste. In the series, Luka has a special connection with Marinette, as they share a romantic relationship at one point. He is also a member of the Bubbler and has the ability to transform into a superhero known as Viperion when he receives the Snake Miraculous. His character adds depth to the show's themes of friendship and love.