This is RaviCalumon, Digidestined Digimon of Destruction, partnered with Marie Mikarigi at a younger age a few years before her meeting with Flamebolt.
She was orignally a pile of corrupted digital data until discovered by Jacob Caranis, decendant of the Master Item Smith Jacub Carano. He was able to recompile the data restoring the fallen Digimon her form but because it was a patchwork recovery she retained various wounds and stitches all over her small body. After a week of RaviCalumon coming back to awareness, and in a lot of pain which Jacob tried to help with the complete recovery, she left in the cover of night to avoid any more 'torture' sessions as she thought of them as.
That same night she was lured to a calm, soothing source of power that slowly seemed to ease her pain more than what her savior could do. Floating in the air and following the aura to the source, she met up with Marie, who was currently on the run for accidentally casting a paralysis Magical Art on a girl that spooked her. Marie had a triangle-shaped Digivice with a Crest attached to the back of it. A beam shot from it, completely calming the pain that had once almost driven the digimon crazy. Since that meeting they stayed together, almost seeming to be destined for the meeting. RaviCalumon usually stays on Marie's back if she's not holding her to her chest.
RaviCalumon can seem a little... demented at times. Because of her going through so much turmoil caused her mind to warp and distort, also leading to why her three elemental abilities, Fireball Rain, Ice Shower and Dancing Light to appear to be spastic and random sometimes. Occasionally she has been know to damage herself in the middle of a fight to serve as confusing her opponent and to fuel her own madness. Normally when with Marie she is usually sleeping soundly, even if a bullhorn is blown in her face, but anyone that wakes her up except for Marie best be wary of her wrath...