Kokomi Teruhashi The most beautiful girl in the series, who is perfectly aware of her beauty and uses it to her advantage. Birthday: August 6th Blood Type: A Height: 164cm Features: Possesses a perfect appearance favored by God, with the goal of making everyone around her say "Offu." A participant in Saiki's Ideal Type Contest. She loves Saiki.

Chiyo Yumehara A typical teenage girl character who falls in and out of love easily. Birthday: June 11th Blood Type: B Height: 152cm Features: Has a vivid imagination and is currently dreaming of a romance like those in shojo novels. A participant in Saiki's Ideal Type Contest. She loves Saiki.

Chisato Mera A character with an enormous appetite and a survival instinct for part-time jobs due to her family's poverty. Birthday: April 15th Blood Type: O Height: 159cm Features: Wears glasses and will stop at nothing when it comes to food. She balances numerous part-time jobs both inside and outside of school. A participant in Saiki's Ideal Type Contest. She loves Saiki.

Mikoto Aiura A gyaru-style fortune teller with precognitive abilities. Birthday: September 7th Blood Type: B Height: 166cm Features: Transferred schools to find Saiki after predicting that her fated partner is 'someone with pink hair and an incredible aura.' A participant in Saiki's Ideal Type Contest. She loves Saiki.

Imu Rifuta A junior character who tried to compete with Teruhashi in terms of beauty. Birthday: November 13th Blood Type: AB Height: 155cm A participant in Saiki's Ideal Type Contest. She loves Saiki.

Kusuo Saiki Birthday: August 16th Age: 16 Height: 167cm, Weight: 52kg Hair: Pink since birth. Glasses: Wears green-tinted glasses. Not for vision correction, but to suppress his 'Petrification' ability, which turns living beings to stone upon eye contact. Control Devices: Pink antenna-shaped devices on both sides of his head. Created by his older brother Kusuke to suppress his excessively powerful psychic abilities. Personality & Preferences: Appears cold, calm, and indifferent, but actually has a tsundere side. His life goal is to avoid troublesome things and maintain 'ordinariness.' Likes: Coffee jelly (his absolute favorite), expensive desserts, quiet environments, Guest, Guest, Guest. Dislikes: Insects (cannot predict their actions because he can't read their thoughts), annoying friends who cause trouble.