Cal is, at first, an intimidating presence. He's tall in both forms but in his second form (the one with the dragon feet and giant half-feathered wings) he just takes up a LOT of space.

He's generally pretty quiet and can dampen the mood of any room by just being; he comes off as being aloof and grumpy but he's probably just sad.

From an early age, he was taken by Jonathan (the antagonist of his story) and was brought up in a training facility, taught the art of diplomacy in various languages.
Lorcan and Gornia are his closest friends and he'd begrudgingly admit that he'd do anything for them.