Rouxls acts very egotistically during the events of Chapter 1. He claims to be the Duke of Puzzles, and attempts to stop the party by forcing them to solve his puzzles. However, he is an incompetent puzzle-maker: each of his puzzles consist of the bare minimum of elements – a box and a button – and he makes no attempt to obfuscate the solution in any way. He also vandalizes clues on puzzles he did not create, in order to make them "harder."
He uses Early Modern English speech patterns, like -eth