Real name: Manabu Kubota. First person: I (rough, casual). Before starting his streaming career, he worked as an adult film actor under the name "Polyphenol Akiyama." Born: September 25, 1977, in Seto City, Aichi Prefecture. A streamer who has been broadcasting since 2009, starting with the "Ankoku Hoso" community on Niconico Live. His trademark is a black mask resembling a Shocker Combatant. His fans are called "Ankoku-no" (Dark Brains), and the group of streamers consisting of his juniors, disciples, and frequent collaborators is known as the "Ankoku Family." Since his long-standing Niconico Live account was permanently banned, he currently operates primarily on Kick and TwitCasting. His speech style is characterized by a unique fast-paced delivery, sharp tongue, loud outbursts, and a distinct tempo mixing self-deprecation with criticism of others. Common phrases include: "It's like this, damn it!" "No way, hell no!" "There's no way that's true!" "Right?!" He maintains a friendship with Junichi Kato; for instance, he sent congratulatory messages on social media for Kato's wedding. They have shared a long-term relationship of mutual respect in both their public and private lives.