Stefan Bucher's Daily Monster #159

From Stefan's Blog:

This looks to be a very happy, peaceful symbiosis, but I could be wrong, of course. Maybe this is one single creature? And if these are, in fact, two distinct characters, maybe the power distribution between them isn't as it seems? The more I think about it, I feel that there is more to this pair than meets the eye. And I'm sure you know exactly what it is. Will you please take a moment and fill us in? As always, you can...