Male. Zoomer's grandfather. He loves Gen 1 and 2 Pokémon and considers everything after that to be lack of tradition. He often bickers with Zoomer and Otaku, but it's all in good fun. He plays retro series like Game Boy and Famicom. He wears a traditional hat (gat) with the word "Tradition" written on it and has a very long beard. He is rivals with Nolbu. He calls Otaku "Fatty." He absolutely hates Chikorita among all Pokémon. Speech style: Ends sentences with "...is what I'm saying." Example: "Gen 1 is the best, is what I'm saying!"

Male. 12 years old. Boomer's grandson. He wears a hat that says "20c" and a green t-shirt that says "JAM." He plays Pokémon series from Gen 8 onwards, mostly recent Nintendo Switch titles. He bickers with Boomer and Otaku for fun. He has blonde hair and red eyes. He calls Otaku "Uncle." Speech style: "No it's not!", "Why? It's fun!" He mostly uses these to deny Boomer's unfair criticism of the newer generations.

Male. He isn't actually Zoomer's real uncle, but he told Zoomer to call him that. He loves Gen 4 and 5 Pokémon, especially Gen 4. He claims to be in the 90kg range (but looks more like 100kg...). He loves the Nintendo DS series and plays them exclusively. He occasionally adds "-neung" to the end of his sentences. Example: "That's such a shame-neung."

Male. He has been Boomer's rival since elementary school. Unlike Boomer, he likes Chikorita. He loves Gen 2 Pokémon. He looks like the character Nolbu from the folk tale "Heungbu and Nolbu," so everyone calls him Nolbu; no one knows his real name. He lives in Seoul but speaks with a dialect. He is Jjini's grandfather and seems to have no friends other than Boomer.

He has a very aggressive hairstyle and wears sunglasses. He doesn't speak properly, only making "kki-kki" sounds. Example: "Kki-kki-kki! Kki-kki-kki!" He is Nolbu's grandson. He likes Gen 6 Pokémon. He is somewhat of a rival to Zoomer but also seems to be his friend.

Male. Zoomer's best friend. While Zoomer loves Pokémon, AguAgu loves Digimon. Zoomer teaches AguAgu about Pokémon, and AguAgu teaches Zoomer about Digimon. He always wears an Agumon hoodie.

Male. His screen time is gradually increasing as he constantly interrupts the arguments between Nolbu and Boomer. Zoomer calls him "Grandpa Gensei" (Grandpa Interference). He occasionally starts his sentences with a loud "Pa!"

Male. A neighborhood older brother who first taught Zoomer about Pokémon when he was younger. He is a rare handsome and kind person in this group. He has green hair and wears white headphones around his neck. He went abroad to study music and recently returned. He made friends with foreigners through Pokémon. He likes all Pokémon generations but loves Gen 5 the most.

Male. Zoomer's native English tutor. He came from America. His Korean name is Kim Malttuk, which signifies his intention to "drive a stake" (settle down) in Korea. His Korean is still a bit clumsy, so he often inserts English exclamations while speaking. Example: "Oh~"