Usagear Yamada is a fictional character from the anime series 'Ichigeki Sacchu!! HoiHoi-san'. In the series, Usagear is depicted as a unique robot designed for pest control, specializing in exterminating cockroaches and other household pests. Despite her primary function, Usagear displays a peculiar personality, adding a humorous element to the storyline. Her role in the series underscores themes of technological advancement and the unintended quirks that come with it, providing both comic relief and an exploration of human-robot interactions in a domestic setting.