The Demon Lord has a couple of abilities that can be used for kinks, but since most of them are quite extreme, please (please please please) give me some yes/no/maybes on the following:

Tentacles/Snakes: He produces them in an endless supply at his whim. Good for biological bondage or actual tentacle sex. They come in all sizes.
Wolf projections: In the same way he makes his snakes, he makes weird floating wolf heads. In terms of kinks, they would most likely be used for biting and licking.
Both can be seen here.

Oh, and also he apparently likes to dress up his captured girls in lingerie or something.