Nekko is a Hololive-related fictional character or mascot-like name rather than a widely established main cast member with a canonical full and last name. In Hololive contexts, the name is used as a cute, cat-themed identity associated with fan culture and character branding. The character’s role is typically as a playful, affectionate, and memorable presence that fits Hololive’s virtual idol and comedy-driven style. Because no official surname is consistently used, the name is best represented simply as Nekko.