Character Name : Romi (voice)

Original Name : 이지현

Gender : Female

Character Name : Heartsping (voice)

Original Name : 조경이

Gender : Female

Character Name : Heart King / Monster Truthping (voice)

Original Name : 최낙윤

Gender : Male

Character Name : Belita / Girl (voice)

Original Name : 여민정

Gender : Female

Character Name : Stella (voice)

Original Name : 홍소영

Gender : Female

Character Name : Dr. Monziu / General Teenieping (voice)

Original Name : 홍범기

Gender : Male

Character Name : Marie (voice)

Original Name : 김하영

Gender : Female

Character Name : Liam / Butler (voice)

Original Name : 류승곤

Gender : Male

Character Name : Truthping (voice)

Original Name : 조현정

Gender : Female

Character Name : Happying / Young Liam / Girl's Mom (voice)

Original Name : 김은아

Gender : Female

Character Name : Lalaping / Maid / Stickping (voice)

Original Name : 장예나

Gender : Female

Character Name : Mr. Bus Stop / Freezeping (voice)

Original Name : 엄상현

Gender : Male