Oh geez, that's right, Rexxar and Garrosh are Orcs too. I honestly forgot about that.
...almost half of the base heroes in the game are Orcs. That seems odd. Though perhaps that's just because I'm not a Warcraft fan, so I'm used to Orcs being what they are in Tolkien and D&D. Also, the rest are four humans and only one Elf, and it's one of those weird not-dark Elves, rather than a more traditional one. Also feels odd now that I've realized it. (Not the humans being so numerous, the low count of Elves, and total lack of Dwarves.)