The enigmatic Tohya Miho frequently meddles in the lives of the protagonists. Miho knows Piro and Largo from the "Endgames" MMORPG previous to "Megatokyo"'s plot. She abused a hidden statistic in the game to gain control of nearly all of the game's player characters, but was ultimately defeated by Piro and Largo. In the comic, Miho becomes close friends with Ping, influencing Ping's relationship with Piro and pitting Ping against Largo in video game battles. Miho is also involved in Erika's backstory; Miho manipulated Erika's fans after Erika's disappearance. This effort ended badly, leaving Miho hospitalized, and the TPCD cleaning up the aftermath. Most of the exact details of what happened are left to the readers' imagination, as are her current motivations and ultimate goal. Miho and many of the events surrounding her involve a club in Harajuku, the Cave of Evil (CoE).