Grandpa Chan (Chan Jae Lee) was born in Seoul, Korea in 1942, and graduated from Seoul National University with a degree in Education. He taught Earth Science at a high school. After immigrating to Brazil, he and his wife ran a small clothing store. After the success of his Instagram project, Grandpa Chan has exhibited his drawings in galleries and museums in Brazil, Costa Rica and Korea.
Grandma Marina (Kyong Ja Ahn) was born in Seoul, Korea in 1942, and graduated from Seoul National University with a degree in Education. She taught Korean and Korean literature at a high school and continued her teaching in Brazil at Korean Sunday school, then at an International School. Grandma Marina frequently wrote for Korean-Brazilian newspapers and literary publications.