Male. He has a strong sense of justice and a personality that doesn't sweat the small stuff. He is energetic and simple-minded. By possessing a Bakera, he transforms into the swordsman Kengo Redmaru. He has red hair that resembles cat ears. He uses a sword when transformed.

Male. Myohan's friend since elementary school. By possessing Almang, he transforms into the Yo-kai Hero, Little Commander. He has sky-blue hair. He wears something resembling a spacesuit when transformed.

Female. She loves robots and mechs. She also enjoys inventing various things, some of which seem quite dangerous. She is close friends with Ji Myohan. By possessing the spirit Broken Clock, she transforms into the Yo-kai Hero, Clock Lady. She is a beautiful girl with blue hair.

Male. A delinquent at Y Academy. He seems to lead others through a mysterious power. He is part of Ji Myohan's group. By possessing Black Lion, he transforms into the Yo-kai Hero, Shishio. He has red hair.

Male. A top-class handsome student at Y Academy, popular with the girls. He is part of Ji Myohan's group. He equips a different version of the YSP Watch called the "YSP Watch Zero." By possessing Kyubi, he transforms into the Yo-kai Hero, Nine-Tail. He has long white hair.

Male. Cool and cautious, he doesn't think highly of the YSP Club. He transforms into Deep Shadow Galaxy using an Alien Watch. He has black hair about chin-length.

Male. A very ordinary boy who accidentally joins the YSP Club. He's a character who suffers in many ways. He plays the 'straight man' role due to Myohan's antics. He has black hair shaped like an onion.

Female. She seemed ordinary, but she is a self-proclaimed "Invasion Magical Girl" from another planet. She attacks using various magic-like powers from her staff and is extremely strong. She has brown hair with pink tips. She is beautiful. She is a villain with a final boss vibe.

Male. Cool and quiet, but loves music. He uses a Viper Connector to transform into Sky Snaker. He has deep dark circles under his eyes and light purple hair that fades into white at the ends.