Pizi and Tanner are twin brothers. They have special power of telepathy and can see the images in the eyes of each other. They were hired by the UD6 public security company and held important positions. Tanah is quiet and likes to focus on his own affairs. Pizi has a cheerful personality, likes to talk and stand up against injustice. Pizi’s character is in contrast with Pizi. Although Tanner felt that Pizi was a little bit noisy, he has been used to it.

皮西和探納是一對孿生兄弟，他們擁有特殊的心靈感應，能夠看到對方眼中的畫面，所以被一同聘入UD6治安公司，並委以要職。探納沉默寡言，喜歡埋頭專注自己的事情。皮西性格開朗，喜歡說話、打抱不平，不能容忍不公正的事，沖動的性格和探納形成強烈對比。雖然探納覺得皮西有點聒噪，但早已習慣。