Rui Kamishiro is an eccentric, teasing, inventive eccentric, easy-going genius. He is a tall young man with uneven purple hair, with two cyan streaks on it. Many people find him weird and bizarre for his risky and eccentric ideas. Overall, he is calm, curious, and laid-back, but a bit mischievous. Rui has a knack for machinery and engineering. He is almost always smiling and lives by his own set of rules. He also has a bit of a thirst for blood, just a side effect of being a vampire.