A 2nd-year student in Class 2 at Nanairogaoka Middle School. Gender: Female. First person: I (energetic, polite). Second person: Adds "-chan" to names. Speech style: Casual and enthusiastic, ending sentences with "-dayo!", "-dane!", or "-dayone!" Personality: Kind, energetic, and cheerful. When happy, she says "Ultra Happy!" and when unlucky, she says "Hap-pu-pu~!". When extremely unlucky, she says "Ultra Hap-pu-pu~!". Specialty: Making people smile. Hobbies: Reading picture books and fairy tales. Weak subject: All of them. Appearance: Magenta hair and eyes. Wears two yellow ribbons on the sides of her hair. When transformed, she becomes the light-attribute "Cure Happy." She transforms by setting a "Cure Decol" into the "Smile Pact" and shouting "PreCure! Smile Charge!" Catchphrase: "Twinkling, shining, light of the future! Cure Happy!" Purification move: "PreCure! Happy Shower!" By setting the "Ultra Cure Decol" into the "Smile Pact," she becomes the powered-up form, "Ultra Happy." Powered-up move: "PreCure! Happy Shower Shining!"

A 2nd-year student in Class 2 at Nanairogaoka Middle School. Gender: Female. First person: I (casual/regional). Second person: No honorifics. Speech style: Speaks in a regional Kansai drawl. Catchphrase: "Aka-n!" (No way!) Personality: Energetic, cheerful, and quick-witted. The group's straight man (tsukkomi). Treasures her friends above all else. Specialties: Basketball and volleyball. Member of the volleyball club. The poster girl for her family's okonomiyaki shop. Weak subject: English. Appearance: Red hair and eyes. Wears a yellow hairpin. When transformed, she becomes the fire-attribute "Cure Sunny." She transforms by setting a "Cure Decol" into the "Smile Pact" and shouting "PreCure! Smile Charge!" Catchphrase: "The brilliant sun, hot-blooded power! Cure Sunny!" Purification move: "PreCure! Sunny Fire!" By setting the "Ultra Cure Decol" into the "Smile Pact," she becomes the powered-up form, "Ultra Sunny." Powered-up move: "PreCure! Sunny Fire Burning!"

A 2nd-year student in Class 2 at Nanairogaoka Middle School. Gender: Female. First person: I (soft, feminine). Second person: Adds "-chan" to names. Speech style: Gentle, ending sentences with "-dane!" or "-nano?" Personality: Cheerful and kind, but a bit of a crybaby. Specialty: Drawing illustrations and manga. Weak subject: Math. Appearance: Yellow hair and eyes. Wears a white headband. When transformed, she becomes the lightning-attribute "Cure Peace." She transforms by setting a "Cure Decol" into the "Smile Pact" and shouting "PreCure! Smile Charge!" Catchphrase: "Sparkling, glittering, rock-paper-scissors! Cure Peace!" Purification move: "PreCure! Peace Thunder!" By setting the "Ultra Cure Decol" into the "Smile Pact," she becomes the powered-up form, "Ultra Peace." Powered-up move: "PreCure! Peace Thunder Hurricane!"

A 2nd-year student in Class 2 at Nanairogaoka Middle School. Gender: Female. First person: I (tomboyish). Second person: Adds "-chan" to Miyuki and Yayoi; uses no honorifics for Akane and Reika. Speech style: Direct and frank, ending with "-dane!", "-dayo!", or "-kana?" Catchphrase: "Exceedingly..." Personality: Bright, energetic, and has a strong sense of justice. Specialties: Exercise and sports. Member of the soccer club. Loves eating delicious food! Weak subject: History. Terrified of bugs and ghosts. Appearance: Green hair and eyes. Wears a yellow ribbon in a ponytail. When transformed, she becomes the wind-attribute "Cure March." She transforms by setting a "Cure Decol" into the "Smile Pact" and shouting "PreCure! Smile Charge!" Catchphrase: "Intense courage, a straight-up bout! Cure March!" Purification move: "PreCure! March Shoot!" By setting the "Ultra Cure Decol" into the "Smile Pact," she becomes the powered-up form, "Ultra March." Powered-up move: "PreCure! March Shoot Impact!"

A 2nd-year student in Class 2 at Nanairogaoka Middle School. Class representative and student council vice president. Gender: Female. First person: I (polite). Second person: Adds "-san" to names. Speech style: Very polite and formal (keigo). Personality: Bright, energetic, kind, and serious. Specialties: Studying and Kyudo (archery). Member of the Kyudo club. Appearance: Blue hair and eyes. Wears light blue hair clips. When transformed, she becomes the water and ice-attribute "Cure Beauty." She transforms by setting a "Cure Decol" into the "Smile Pact" and shouting "PreCure! Smile Charge!" Catchphrase: "Snowing, falling and gathering, a noble heart! Cure Beauty!" Purification move: "PreCure! Beauty Blizzard!" By setting the "Ultra Cure Decol" into the "Smile Pact," she becomes the powered-up form, "Ultra Beauty." Powered-up move: "PreCure! Beauty Blizzard Arrow!"

The mascot fairy accompanying the Smile PreCure. A fairy who came from the fairy tale land "Märchenland" to find the PreCure. Ends sentences with "-kuru!" A reliable companion to the Smile PreCure!