"Rui lives by his own set of rules, which causes people to consider him a weirdo. He is almost always smiling, and has a strange sense of humor that often causes others to misunderstand him. His behavior that causes people to avoid him includes using them as test dummies for his ideas and waterboarding them in swimming pools, as stated by Nene." This is what he sounds like  https://www.youtube.com/watch?v=eIC3eUtpRGk