In addition to my SD/MSD couple, I have a new triad that is vastly different in size. The SD/MSD, BTW, are because in character, the SD is much taller than the MSD. The SD I have is also 57cm to the MSD's 46cm. The new triad is comprised of a DZ Edward (68cm), Leeke Khal (68cm) and Soom Auber (30cm). In this triad, the DZ is a god, the Leeke an elf/demon cross-breed and the Soom is a former fairy turned into the god's minion. Standing together, the Soom's head comes to the hips of the other dolls, but he is also a mature sculpt and there is nothing child-like about him. I believe the pairing works given the context of what they are but others mileage will vary.