Tyutyumon (Fusion)

Tyutyumon is a character in Digimon Xros Wars and a member of Twillight. Although he looks like a tiny, robotic mouse, he has only compressed his true data size, which is quite large. He works with his partner,, as a spy for. But while Damemon starts to express some reluctance in following their leader due to his manipulation of Yuu, Tyutyumon is more loyal to DarkKnightmon's goals.

Description
Throughout most of the series, Tyutyumon functions as Damemon's partner even though the two begin to disagree over DarkKnightmon's manipulation over Yuu. After Damemon's death, Tyutyumon continues to serve DarkKnightmon by overseeing Yuu's captivity, until Taiki and his group arrive to save the boy. Though Tyutyumon expands to his true, gigantic size, he is overpowered by Persiamon before she easily devours him.