My first thought was: "Is that one of the Miners (Knockers) from "Chillin' in My 30s after Getting Fired from the Demon King's Army" but after going through the Episode 3, I saw, that these got small Tailks like Kobolds. It was quite funny tough, when they got to the Point, of when he had to mask himself up, and one Knocker-Girl said it was her underwear. Making him the Hentai-Kamen of his own Anime.