Seems like it would only be a matter of time before we got a gender-bent Krampus Monster Girl. Hell, for all I know KC could be putting pen to paper on this concept as I'm typing this.
In old Germanic folklore, the Krampus was a counterpart to Santa Claus who punished the children who misbehaved by either beating them with switches carved from a birch tree or even abducting some unrepentant delinquents.
Most versions of the Krampus depict it with cloven hooves and horns growing out of their head like a goat, so a gender-bent iteration of the Krampus could bear at least a superficial resemblance to a succubus. As far as traits or personality goes, I could see a lot of overlap with the Dark Elf with the emphasis on domination and corporal punishment. However, I imagine it would be in an MGE Krampus' nature to seek out wicked human men to punish, maybe keeping them until their captives are docile and broken.
Also, it would be pretty easy to imagine a Krampus Mamono dressed in a Christmas motif since it's supposed to be a counterweight to Saint Nicolas.