My wife works for a radio station and sometimes I go and have lunch with her. Recently during one of our lunches she asked me how many Dwarf characters I have in my universe. I realized this is a very good question. One worthy of answering right here. I even address this in one of my new short stories currently in the works.
In my universe there are two kinds of Dwarfish people. There are the racial fantasy Dwarves also called Celestials and those with actual Dwarfism.
The two communities don't like being mistaken for each other and this causes some friction between them. One side will say they aren't medical freaks and that will anger the other of course. Those of the medical side will say they aren't a bunch of barbarians to poke at the racial side.
I have more than a couple of active characters from either side of that fence and it can get slightly confusing as to who is who. The short story I'm working on has a character named, Ultrasonic. He is a man with Dwarfism who is deaf and mute. He has the power to amplify and control sound waves. He's also a telepath and an advocate for education on Dwarfish issues particularly where parahuman powers are involved.
In the GZ universe there is a connection of increase of people with powers who also have certain medical conditions, like Dwarfism. It's a matter under study and of intense interest in the society. It's discovered that a person with Dwarfism is up to 5x more likely to have some sort of power.
I think a development like this makes my universe more believable. It gives depth and identity. As for who those Dwarves are:
Monolith's human form is a man with Dwarfism. His teammate, the Serpent is a racial Dwarf. One of my top villains, The Maker, is a racial Dwarf. I even have a reptilian Dwarf called JoJo.
So that's the answer basically. I have several Dwarves in my universe and you can read about many of them anytime!