Demented

From left to right: Kai, Desdemona, Shade and Nier. This isn't Kai's whole family as he has a large network of familial ties since his dad was a man-slut These are only the siblings that have appeared in the comic thus far, and there are many many more

Obviously this picture is from before the current timeline in Yamase, and completely outside the cannon since there is no way these guys would be able to get along long enough to take a photo together (except for Dezi and Kai)

A companion piece to this:
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[link]

All these characters are from