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. Not only that, it also utilizes various assassination techniques such as rapid-throwing the two knives it hides within its sleeves, 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.

(Source: Wikimon)