Mervamon is a supporting protagonist and Nene's second partner in the anime Digimon Xros Wars/Fusion series.
Mervamon is a femmine humanoid Digimon with cyan hair and large chest. She wears a skull-like helmet with horns, and red ribbons tied up on both horns. She has two weapons, a large red sword with silver edges and engraved with black and white stripes, and a white snake puppet with plates. She did not appears to wear much, only seen wearing a black bra with white front hook surrounded by spikes. She is also wearing a black micro skirt and a red sash.
In the anime
Mervamon is first seen battling her young brother Ignitemon, who was under Zamielmon’s forces to torture other Digimon. After she meets the main protagonists, she brought the main protagonists to a treehole and showed the conditions of the weak Digimon whose powers was stolen by the Bagra Army. She battle with her younger brother and the Bagra Army later on, Nene DigiFuses her with her partner, Sparrowmon and defeats GrandisKuwagamon. When she censures younger brother of betraying her, Nene tells her she had a younger brother too, and which is searching for. After the defeat of Zamielmon, she joins the Fusion Fighters and left the forest for her younger brother and Stingmon to protect. She then becomes one of Nene’s frequently used Digimon, and had a crush with Beelzemon.
After Beelzemon's revive, she is seen knocking him to the ground and crying about him.