Brooklyn Kingston Liebig was born in Berlin on 6 July 2008. He got into acting through his younger brother, who started before him. Brooklyn's first appearance in front of the camera was a commercial for the supermarket chain Penny in 2018. In December 2019, he took part in an audition for the children's film "Lucy ist jetzt Gangster" and was then cast in the lead role of the perky Tristan, the best friend of the young title character. However, due to the Corona pandemic, filming did not start until spring 2021.