This applies to the designs below. Grumpy should be a combination, as follows:
The first two photos of the elephant dressed in red, white, and blue show the correct posture (upright), colors, and wardrobe. But both of those elephants are too happy.
The photo of the all-gray elephant with hands on hips has the right hands on hips body language, though nothing else about that picture works.
The photo of the elephant's head with intense eyes and angry teeth is TOO ANGRY. It looks too scary. The character should be grumpy and frustrated, but not monstrous. Maybe smaller teeth would soften it just a bit.
The elephant wearing the boxing globes has a good look to his eyes, but the teeth, again, are too scary.
Same with the elephant in a squatting position with the GOP tattoo on his arm. Maybe that one, without the tusks, would work better in terms of the expression, but again, the size and shape of the elephant is best in the first two images.
YOSEMITE SAM: I include the famous character Yosemite Sam, who always gets one-upped by Bugs Bunny, as an example of what Grumpy the Elephant's personality should be. A hothead, but sort of a bumbling one.
JOHN MCCAIN: Look at the anger and frustration in John McCain's face. That should be captured in the elephant.
Hope that helps and feel free to ask me more - in case you need more specificity.