Every version of Gremlin D.Va will be short in stature and have some version of the :3 face (unless there's a Dorito stuck in her mouth). She's also a brat in all versions of the meme, but it takes a couple of different forms:
The first version of her embodies the stereotypical pro-gamer. She's almost always angry, consumes a lot of McDonalds, Mountain Dew and Doritos, and is sometimes seen as a shut-in.
If not either of those, she's portrayed as the "child" character. Her brattiness is retained but she's now given a pseudo-family in the form of Soldier:76, or Mercy and Pharah. This will also take the form of fusing with the first version in a Doma Umaru-like fashion.
Also known as Goblin D.va.