Cloud giants seem interesting in that they're depicted as focused rather heavily on society, appearance, and culture. Which is generally not the case, in my experience, with most 'giant-kin' races.
Tag: Dungeons
7. Aboleth
It's like they're aspiring to be Cthulhu, but lack the same type of the "otherness" that malevolent star monsters have.
6. Gnoll
Gnolls generally fit a specific role in my mind. And that is antagonistic humanoids for low level parties. They have a nice flavor because they strike me as more organized than Orcs and Goblins, and particularly less used. I love a good orc, but aggressive dog men are pretty cool too.
5. Elephant
Writing ideas for the elephant was similar to writing ones for the bison, in that I found that I don't really know much about them...
4. Chimera
There was only the one Chimera in myth, after all. So that's something to consider when planning an encounter, or an adventure. "Is this beast one of a kind?" Slaying the Chimera was Bellerophon's greatest feat, after all.
1. Air Elemental
As long as you stay "in character" with the type of elemental you choose there's really no way you can go wrong.
The Menagerie 