Obanai Iguro first appeared in Koyoharu Gotouge's Demon Slayer manga and became widely recognised through the Ufotable anime adaptation that began in 2019. As the Serpent Hashira, he is known for his heterochromatic eyes, bandaged mouth and white snake Kaburamaru. Short edit audios using his name spread through anime TikTok and AMV communities, where a recognisable character name works as a search shortcut. The 'Obanai Banai' spelling circulated on soundboards, keeping the clip tied to dramatic edits, cosplay reveals and character rankings rather than a specific scene or quote.