Nana Nekozawa, also known as MC.Lion, leads the DJ unit Card Jockey in Wixossland's virtual space. A charismatic high school student and reader model, her appearance features blonde hair and yellow eyes, embracing a feline flair with a black cat-eared hat, tail attachment, and brass medallion. She typically wears a short black jacket with yellow streaks over a gray dress, paired with a long yellow scarf, black stockings, and black shoes.

Her personality radiates high energy and rhythm, punctuating her speech with the distinctive first-person pronoun "nya." This playful, upbeat approach defines her interactions and Diva Battle style. As Card Jockey's leader, she fuels a lively atmosphere during team activities and competitions, frequently sparking spontaneous actions. Her childhood friend and teammate, DJ.Lovit (Mimi Usakawa), often counters Nana's impulsive enthusiasm with rational perspectives, while another teammate, VJ.Wolf (Rara Inumiya), contributes a contrasting cool, efficiency-focused dynamic.

Card Jockey specializes in DJ-based performances within Diva Battles, where teams of three compete to win the most Selectors (fans) through virtual card battles. Nana's leadership prioritizes creating rhythmic, engaging experiences during these matches. While her style often emphasizes energetic improvisation, her teammates provide balance: DJ.Lovit offers stability and practicality, and VJ.Wolf focuses on strategic efficiency and minimal time expenditure.