Luka Couffaine (Viperion)

Luka is a tall and slender French teenager, with a Roman nose, pale pink lips, luminous cyan eyes, and medium-length black hair with cyan-tinted tips.

At fifteen, Viperion wore a snake-themed superhero suit, mostly in deep green, dark cyan, yellow, bright opal, and dark turquoise, with a slim but muscular figure. His suit had a texture and patterns similar to those of a snake, with fangs on his bright opal and turquoise-gray mask. His eyes changed from cyan to a bright spring green, and the dyed tips of his hair turned a moderate sea green. He also appeared to be wearing light pink lipstick. He wore the Snake Miraculous on his wrist and used a Lyre as his weapon.

Luka is a quiet and reserved boy, but with a mixed personality that combines playfulness, charm, maturity, and a bit of a flirt. He's empathetic when it comes to reading other people's emotions, which he expresses through his music. He also has a very kind and generous nature, especially toward his friends and family, but also toward people he's just met, such as when he encourages Marinette shortly after meeting her.

While generally easy-going and easy-going, Luka can lose his cool if he feels he or his friends are being treated unfairly, such as when Bob Roth stole his band's music, dance, and costumes and claimed them as his own. Though he mostly maintains his composure, Luka lost his temper when Bob threatened Marinette. According to her, he is very intuitive.

Luka also proves to be understanding and patient. Although he ended his relationship with Marinette because she couldn't share her secret, he decided to wait until everything was cleared up. When he discovered Marinette's secret and understood Ladybug's rules, he accepted that the city needed Ladybug and Cat Noir.

He's someone who takes the time to mediate difficult situations between his friends and family. Like Adrien, he has the ability to give second chances to those who have done something wrong, although sometimes his kindness and optimism lead him to naivety, as when he signed a contract with Bob without reading it first.

His strong moral compass and desire to protect others led him to refuse to work for Bob, who was only looking out for his own benefit, and to resist his own akumatization to protect Ladybug and Cat Noir. As Viperion, he remains the same Luka: attentive, calm, and willing to offer ideas and suggestions to others. His calmness and focus are notable in his role as a superhero.

As Silencer, his main goal was to get Bob Roth to confess to stealing the Kitty Section song.

Luka is very skilled at playing the guitar, performing in a band with his sister, Rose, and Iván. He is also very good at figure skating.