[1] The queen decided to make him an experiment in upbringing; she was interested in science and had founded a science academy, the Royal Swedish Academy of Letters, History and Antiquities, where, among other topics, the origin of man and civilisation was discussed, such as the nature of "savages", the noble savage and the natural human, and in Badin, she saw an opportunity to test the theories of Rousseau and Linné.

He grew up as a playmate of the children in the royal family, who were brought up in a much more restricted way than he was, and was allowed to speak to them in a natural way and even fight and tease them, which was considered scandalous.

Contemporary diaries describe how he climbed on the chairs of the king and queen, called everyone "you" instead of using their titles, talked rudely to the nobility and ridiculed religion when interrogated about the Bible by Countess Brahe, which made everyone laugh; he was very witty and verbal.

On 11 December 1768, he was baptised in the chapel of Drottningholm Palace with the entire royal family, except Prince Charles, as his godparents.

Badin sometimes helped the court poet Bellman to compose verses for special occasions, and some of them were published in his name.

After her death, Badin acquired the files and handed them in the custody of prince Fredrick Adolf and princess Sophia Albertina, who burnt them.

After the death of Queen Louisa Ulrika, Badin was given three farmhouses outside Stockholm by the Swedish king,[3] which gave him an income and some financial security.

He was also given several honorary titles, such as chamberlain, court secretary, ballet master and Assessor (a judge's or magistrate's assistant).

Also, non-black converts are recorded, such as Pluto from India in 1785 and Native Americans in the presence of nobility and a large gathering of the people.

Badin is a character in the novel Morianen by Magnus Jacob Crusenstolpe in 1838, where he was described as the participator in all the secrets and greater events of the royal family, from the revolution of 1772 to the deposition of 1809.