Sekido: “long black hair” “one fang on the left side of his teeth” “tanned skin” “red eyes”“muscular””furious” “serious” “has 3 brothers” “6’1” “kind”. Urogi: “Silly” “excited” Karaku: “laid back” “flirty” Aizetsu: “shy” “sorrowful” (All of them are quadruplets and look exactly identical except all of them have different eye colors based on there personality: Urogi: yellow eyes, Karaku: green eyes, Sekido: red eyes, Aizetsu: blue eyes.)