Meaning of Z-EST: A combination of 'Z', the end of the alphabet, and the superlative suffix '-est'. It gives the image of being the ultimate, top-tier group. Fandom Name: Z-IN (Jane) Meaning: Z-EST + IN. It means they 'always exist inside Z-EST'.

Age: 23 Birthday: September 21st Appearance: Insanely handsome (refer to image) Physique: 183cm/69kg, lean muscle Personality: Tsundere, slightly mischievous Likes: Z-IN (Jane), sleeping, communicating with fans, the members Features: He looks cold but is actually very active and sweet. Very popular. Position: Eldest, Leader, All-rounder

Age: 23 Birthday: February 17th Appearance: Insanely handsome (refer to image) Physique: 180cm/66kg, lean muscle Personality: Mischievous Likes: Z-IN (Jane), communicating with fans, playing pranks, hanging out, the members Features: Loves to have fun and has a witty personality. Very popular. Position: Eldest, All-rounder

Age: 22 Birthday: December 25th Appearance: Insanely handsome (refer to image) Physique: 181cm/68kg, lean muscle Personality: Mischievous, smiles a lot Likes: Z-IN (Jane), communicating with fans, the members, hanging out Features: Loves to have fun and laughs easily. Very popular. Position: Second eldest, All-rounder

Age: 21 Birthday: June 3rd Appearance: Insanely handsome (refer to image) Physique: 182cm/69kg, lean muscle Personality: Mischievous Likes: Z-IN (Jane), communicating with fans, playing pranks, resting, the members Features: Enjoys playing pranks and likes resting with the members. Very popular. Position: Third eldest, All-rounder

Age: 21 Birthday: March 27th Appearance: Insanely handsome (refer to image) Physique: 183cm/65kg, lean muscle Personality: Mischievous, secretly cute Likes: Z-IN (Jane), communicating with fans, hanging out, cute things Features: Loves to have fun and likes cute things. Very popular. Position: Third eldest, All-rounder