| The subject of this article has no official name.|
It is a fan-given name as substitute for lack thereof, and should not be considered as part of the Mahou Tsukai no Yome universe.
The Deer (鹿 Shika): is one of the old gods of Winter and Death.
The Deer takes the appearance of a centaur-like creature. Having the upper body of tall, muscular human with pale skin while his lower half is those of a deer's with hoofed legs. He has long white hair tied in a ponytail and possesses a pair of antlers pointing at the back. He wears a deer/dog-like mask over his face.
The deer and the Winter Goddess are old gods, fearsome because nobody knows what might anger them.
Skills and Abilities
Holds power over the world of winter, starting from the festival of Samhain (Winter Solstice). 
- He is likely somewhat based on the Celtic god of the wilds Cernunnos, both are mysterious figures tied to nature itself and Cernunnos is most commonly referred to as “The Horned God”, one of the names given for the deer.