Sistermon Ciel

A Digimon wearing a veil modeled after a mouse, it is Sistermon Blanc's elder sister as well as the twin sister of Noir. Instead of traveling together with Noir and Blanc, it roams around the Digital World investigating unusual phenomena and reports its findings to Gankoomon. Despite its gentle personality, it is strong-willed and popular with the Digimon residing in the places it visits. While it is friendly and leads a peaceful life by day, by night it turns into an assassin who hunts down any troublemakers it receives word of. It has a cherished sword named Shirotsume-Ichimonji, and its Signature Move is cutting down the enemy without making a sound (Shirotsume-Ichimonji-giri). Not only that, it also utilizes various assassination techniques such as rapid-throwing the two knives it hides within its sleeves (Byakusai), and luring the enemy in until they let their guard down, then stabbing them in their vitals at close range using the knives planted on its feet (Tohhou).

頭にネズミの形をしたベールを被っているデジモンで、シスタモン ブランの姉でノワールとは双子の間柄。ノワールやブランとは行動をともにせず、デジタルワールドを渡り歩き異変などを調査し、ガンクゥモンに各地の情報を伝えている。性格はおっとりしているが芯が強く、渡り歩いた先々のデジモンたちからも人気が高い。日中は和気藹々と平和に暮らす姿を見せるが、夜になると情報を得た不穏分子を狩る暗殺者に一変する。“白詰一文字”と呼ばれる愛刀を持ち、音を立てずに敵を切る『白詰一文字切り』を得意技とする。また袖から忍びナイフを２連射する『白殺』、敵の油断を誘い至近距離から足に仕込むナイフで急所を突く『突蜂』と様々な暗殺技がある。