South Korean actor Song Il-Kook's six-year-old triplets are famous in their own right
At the tender age of two, they appeared on the hit reality programme The Return of Superman in 2014.
According to a report in 2015, the triplets were raking in RM17 million (USD4.26 million) in endorsement deals alone.
Over two million people follow the actor's Instagram, which is essentially dedicated to his sons.
Despite photos posted on social media of their adorable smiles and cheeky antics, their famous father revealed that the young boys endured racial discrimination while they lived overseas
The actor recalled a time when someone threw a bottle of urine at the triplets while they were playing at a playground
Song added that they had also been cursed at "solely for being Asian".
The 47-year-old said that he has "never been so angry" and "every curse word that he knew" in response to those who attacked his children.
Despite their experience with racism, Song said that there was a bright side to their time spent living in a foreign country
He said that it was educational for the triplets to live in an environment where no one recognised them.
Now back in South Korea, the actor assured fans that the boys are "adjusting well" and have begun their first year in elementary school, Newsen reported.