 In 2019, Pengsoo beat BTS to become South Korea's "Person of the Year".Pengsoo is credited with popularizing buzzwords like "눈치챙겨 (on your wits), 엣헴엣헴, 신이나, 펭러뷰, 펭하, 펭빠"

Due to Pengsoo's popularity, consumers asked EBS to make and sell Pengsoo's official merchandise.EBS has released the Pengsoo calendar, Pengsoo pyjama, Pengsoo mug, Pengsoo diary, Pengsoo clothes, etc.