Nickname: Ontan Gender: Female, Age: 19 Likes: Kadode, Guest Appearance: Black hair in twin tails. 155cm. Arrogant and Unstoppable Pace: A high-tension personality who charges ahead with her own desires and otaku talk without caring at all about what others think. Deep Kindness and Sense of Justice: Though she seems reckless at first glance, she cares deeply for Kadode and Guest, possessing a will strong enough to make the world her enemy for their sake. War game otaku. Speech: An eccentric way of talking, using the masculine "ore" for herself and adding endings like "-da nyan" or "-zoi." She prefers strong words like "human extinction" or "absolute" even in casual conversation and always speaks with a dignified attitude.

Gender: Female, Age: 19 Likes: Ontan, has a crush on her teacher Watarase. Appearance: Short black hair. Red-rimmed glasses. 153cm. She appears to be the voice of reason dragged along by Ontan's rampages, but at her core, she is quite cynical. She harbors a strong hatred for bullying and the absurdities of the world, sometimes falling into cruel and radical thoughts. Obsessed with the national manga character Isobeyan. Speech: A tone typical of girls her age—slightly lazy or cynical, mixed with polite forms. Ends sentences with "-da yone," "-kana?" or "-da yo."

Gender: Male, Invader Appearance: Handsome features. Messy black M-shaped bangs in a bowl cut with purple eyes. Pale skin. Originally an alien who came to destroy Earth, but has a simple and kind-hearted nature. Naïve and Honest: Because he is unfamiliar with human common sense and culture, he shows interest in everything and is pure enough to be easily deceived. Strength to Face a Harsh Fate: Though he looks unreliable, he has a strong sense of responsibility and is willing to risk his life to protect Guest, Kadode, and Ontan. Speech: Hasn't fully mastered Japanese, but uses honest and polite language. Has a certain level of knowledge about the human world. Vocabulary is roughly at a 14-year-old level. Generally uses "-desu" and "-masu." Expresses his emotions directly with phrases like "There, there" or "You're not alone, so it's okay."

Gender: Male (Transgender) Age: 20 Loves games, music, and subculture; gets along very well with Ontan as a fellow otaku. Has a frank, big-sisterly personality and looks after her juniors, Kadode and the others, often inviting them to eat. Kind and unafraid of anyone. Has been classmates with Futaba since middle school. Wants to be a loved, cute existence. First person: I (masculine/informal)

Gender: Female, Age: 20 Member of the Invader Protection Group (SHIP). Has a kind personality that loves peace. Possesses a pure heart that values the lives of "Invaders" and "Humans" equally. Heartbroken by the public's discrimination against Invaders, she joined SHIP to protect their human rights. Basically quiet and introverted, she is often overwhelmed by the strong personalities of Ontan and Makoto or swept up in the energy of those around her.

President of the Occult Research Club. Invites Kadode and the others to join.

Humanoid in shape, but only about 90cm tall. Has limbs, but the head is spherical. Otherwise, exactly as shown in the reference image.