I'm not sure that would work, but I'm up for easy solutions. I'll take a stab at getting you the numbers you need. So far as I can see, there are no rigid standards for proportion, even for realistic portrayals of the human body. There's a lot of natural variation. Even for realistic figures, a designer might want slightly different proportions, so if the proportions can be left fluid, that might be best. Also, I'm sure many UMA users would want characters with non-standard proportions, like dwarves, anime figures, and so on. One source gives the following measures: Adult = 8 heads tall, with a head size of 9 inches (top of head to chin) 15 year old = 7 1/2 heads tall with a head size of 9 inches 10 year old = 7 heads tall with a head size of 7 1/2 inches 5 years old = 6 heads tall with a head size of 7 inches 3 years old = 5 heads tall with a head size of 6 1/2 inches 1 year old = 4 heads tall with a head size of 6 inches Another source asserts that anywhere from 5 to 8 heads is normal for adults, and 4 to 5 heads is good for children (with 4 heads being more for younger children), and 3 heads height for infants. Note that 3 heads height is probably also what might be preferred for some cartoon / anime styled characters. The infant-sized proportions is probably what makes them seem cute. A third source thinks 7.5 heads x 2 heads makes for a weak looking adult specimen, even though it is a commonly used set of proportions. They think 8 heads x 2.33 heads is normal, 8.5 x 2.5 heads is fine for an idealized male fashion figure, and 9 x 2.66 heads would be heroic proportions. A fourth source likes the idea of 8 x 2.33 as ideal adult proportions. Leonardo da Vinci gives 8 heads high as an ideal proportion. So those are some good standards of proportion for realistic humans. But many game characters are exaggerated, not realistic. Drawing Comics the Marvel Way suggests using proportions of 6.5 heads high for normal people and 8.75 heads high for typical heroes like Mr. Fantastic of the Fantastic Four (p. 37). To me it looks more like he is 8.33 heads high, but they say 8.75 at least 3 times, so ... maybe I'm not seeing it right. An exception to this rule would be the monstrous Thing, who has a head height of 6 (and no neck), and another would be the villain Kingpin, who has a height of 5 heads (and no neck). IIRC, Marvel has historically used a standard where mighty gods like Odin are rendered with a proportion in the 4-6 range to make them look more massive. While I've never read anything about the proportions for AD&D style fantasy figures, I'd assume that the tendency would be to make adult orcs of heroic proportion but tending toward the grotesque (8 x 2.66), humans of mixed proportions, adult elves of slender proportions (so probably 8 heads high but 1.8-2 heads wide), adult dwarves would be short and stocky (maybe 4-6 heads high, 2.33-2.66 heads wide), adult gnomes might be of more normal proportion though short and slender (maybe 6 heads high and 1.5 wide), and adult halflings / hobbits would be of childlike proportions (say, 4-5 heads high and 2 wide). A designer would probably want to mess around with it a bit to get the right proportions for their concepts. I hope that helps!