Noppo's best known for his appetite—his debut MV "How to Devour Life" is basically a showcase of him eating anything in sight. Despite his genuinely unsettling look, he's actually pretty caring; fans note how he protects Inochi from the Headless Dragon and stops him from smoking, which his official character sheet confirms.
Visually, Noppo is a tall, gaunt gray figure with a face that's essentially just a huge grinning mouth full of teeth. His oversized hands each have an eye on the back, and he can stretch his jaw and extend his tongue to disturbing lengths. He's dressed in a black robe with orange trim and three orange buttons, going barefoot.
There's some speculation that Noppo can shift into a duffel bag form with teeth replacing the zipper—his tongue apparently gets even bigger this way, and he's able to consume other Zingai, like what appears to be a Kuroko at the start of his MV.
By the end of "How to Devour Life," he's noticeably grown larger overall. His robe becomes tighter and extends to cover his arms and hands completely, while his teeth grow more prominent.
Content compiled by AnimeList.moe from publicly available sources.
