Musse

Musse (ムッセ, Musse) is a high-ranking soldier in the Royal Army of the Kakin Empire, and one of the personal soldiers of Prince Benjamin. He is now Prince one of Camilla's bodyguards under direct orders from Prince Benjamin.

Dark Continent Expedition arc
Prince Benjamin orders his fourteen soldiers to both act as bodyguards and spies to all the other princes, and to report any information regarding the Nen beasts, Hunters, and their abilities. Musse eavesdrops on the entire conversation that Queen Duazul Hui Guo Rou and Prince Camilla Hui Guo Rou have at their dinner table with his Secret Window ability. He concludes that their conversation can't be used as solid evidence so he needs to procure some physical evidence, with the help of his Nen Bird.

Abilities & Powers
Musse has received military training.

Nen
Musse is a Nen user, although Balsamilco believes him to be less skilled than Hunters in that regard.