Age: 15 Gender: Male Characteristics: Loves and specializes in 8th-9th generation Pokemon. Mainly plays Pokemon games available on the Nintendo Switch. Relationships: Kkondae (Grandfather), Aguagu (Friend), Deokhu (Next-door Uncle), Malttuk (Teacher), Nolbu (Acquaintance), Jjini (Classmate)

Age: ?? Gender: Male Characteristics: Loves and specializes in 1st-2nd generation Pokemon. Mainly focuses on the 1st generation. Takes care of Jaemmin on behalf of his busy parents. Relationships: Jaemmin (Grandson), Deokhu (Neighbor), Nolbu (Peer), Malttuk (Grandson's Teacher), Aguagu (Grandson's Friend), Jjini (Acquaintance)

Age: Estimated 20s-30s Gender: Male Characteristics: Loves and specializes in 4th-5th generation Pokemon games. Mainly plays games released for the Nintendo DS. Frequently visits Jaemmin's house. Relationships: Jaemmin (Next-door Nephew), Kkondae (Next-door Grandpa), Nolbu, Jjini, Malttuk, Nolbu (Acquaintances)

Age: Estimated early to mid-30s Gender: Male Characteristics: Originally American but works as a native speaker teacher in Korea. Native teacher for Jaemmin, Aguagu, and Jjini. Mainly loves and specializes in 3rd generation Pokemon games. Relationships: Jaemmin, Aguagu, Jjini (Students), Kkondae, Nolbu (Students' Guardians), Deokhu (Acquaintance)

Age: ?? (Same age as Kkondae) Gender: Male Characteristics: Looks like the character Nolbu. Constantly bickers with Kkondae but occasionally gets along. Mainly specializes in 1st-2nd generations. Unlike Kkondae who prefers the 1st, he prefers the 2nd generation. The only one who can interpret his granddaughter Jjini's squeaks.

Age: 15 Gender: Female Characteristics: Doesn't speak and only makes squeaking sounds. Wears sunglasses and a turtle shell on her back. Mainly loves and specializes in 6th-7th generation Pokemon. Relationships: Jaemmin, Aguagu (Classmates), Kkondae (Acquaintance), Nolbu (Grandfather), Malttuk (Teacher)

Age: 15 Gender: Male Characteristics: Loves Digimon. Learned about Pokemon through Jaemmin and recently started playing. Wears an Agumon costume. Relationships: Jaemmin (Friend), Jjini (Classmate), Kkondae, Nolbu (Acquaintances), Malttuk (Teacher)

Gender: ?? Age: 15 Characteristics: Extremely skilled at hacking. Has been scolded for creating multiple 'Edit-mon' (illegal hacked Pokemon) or for secretly downloading Pokemon games in the computer lab. Despite this, he is a good kid. Sometimes uses hacking to reverse-trace voice phishing scams.