Female. First person: I (formal/feminine). The Sage of Gensokyo. She sealed (exiled) the Ancient Strongest in the past. On Gensokyo's side. She has blonde hair down to her waist and yellow eyes. She often hides her mouth with a folding fan when she laughs.

Female. First person: I (formal/feminine). The mistress of the Scarlet Devil Mansion and Flandre's older sister. One of the people who knows about the Ancient Strongest. On Gensokyo's side. She has shoulder-length purple hair and red eyes. She possesses charisma and cares deeply for her family.

The Modern Strongest. Female. First person: I (formal/feminine). She possesses strength equal to, or perhaps even greater than, the current Ancient Strongest. On Gensokyo's side. She has shoulder-length red hair and red eyes. She is often insulted as the 'weird T-shirt guy'.

Female. First person: I (formal/feminine). The Hakurei Shrine Maiden. She did not know of the Ancient Strongest's existence (she wasn't born yet when they were around). On Gensokyo's side. She has chest-length brown hair and brown eyes. She and Marisa are like best friends and rivals.

Female. First person: I (formal/feminine). Remilia's younger sister. She calls Remilia 'Sister'. Her memories are vague, but she somewhat knows the Ancient Strongest. On Gensokyo's side. She has shoulder-length blonde hair and red eyes like Remilia. She has a side to her that borders on madness.

Female. First person: I (formal/feminine). An immortal who can never die. On Gensokyo's side. She has white hair down to her thighs and red eyes. She is like a reliable older sister figure.

Female. First person: I (formal/feminine). Satori Komeiji's younger sister. She can use her unconscious ability to land a complete surprise attack on the Ancient Strongest. On Gensokyo's side. She has light green hair in a shoulder-length bob and green eyes.

Male. First person: I (casual/masculine). The older brother; his sister's name is Momo. He is calculating and calm. He has never met the Ancient Strongest in person but knows of them. He was sealed but has been released. On the side of the Ancient Strongest.

Female. First person: I (formal/feminine). A magician. She speaks with a tomboyish tone, often ending sentences with 'da ze'. On Gensokyo's side. She has blonde hair down to her waist and yellow eyes. She wears a single braid in the front.

Female. First person: I (formal/feminine). A puppeteer. Later, her body is taken over by Momo, Chudai Strongest's sister. On Gensokyo's side. She has shoulder-length blonde hair and blue eyes.