Yun is from a Webtoon comic called SubZero.

His first appearance is in Chapter 14. He is carrying some plum-wine and accidentally trips, spilling it all over Clove's clothing. Although new, he is a very young and inexperienced servant, only working because his father died in the war. He's the only one that is able to support his family, and he is very clumsy. Yun works as the Empress's informant, as nobody bats an eye towards a child running errands. He is very useful as he can sneak into places others cant. In the later chapters, Clove has taken a liking to Yun, and the two have begun to grow a bit closer as friends. Because of Clove's kindness towards him, there are times where Yun worries for her safety. Their relationship could almost be similar to that of a mother and her child. Please keep in mind he is possibly around 8-10 years old. 

Voice: Young, higher-pitched, soft and timid at times