Earl Alois Trancy is the head of the Trancy household and referred to as " Your Highness" by both his butler Claude Faustus, and his maid Hannah Anafeloz. It is stated that he is 14 years old at the beginning of the story, with the birth date of November 5th. Alois lies to his uncle, Arnold, by telling him a false story of his past after being suspected of not being the real Alois Trancy.
Alois's emotions are quite unpredictable; one of his few consistent traits is his very deep attachment to his butler, Claude, demanding attention from him frequently. His mood swings tend to result in violent acts and he seems to have an overall cheerful disposition in spite of his hardships and misgivings, making him a sort of foil to Ciel. He takes an interest in having Ciel due to wanting Sebastian to suffer. Alois appears to be easily angered and loses interest in things very quickly. He often uses harsh and impolite language, regardless of whom he is speaking. His contract mark is held on his tongue and not visible at all times, whereas Ciel's contract mark is in his eye and is visible at all times. His contract mark only shows if Claude is nearby.
(Source: Kuroshitsuji Wikia , Alois Trancy obsession, EarlCiel)
