Shizui with a Vaporeon. People were saying his clothes look Gyarados-themed, but I think they look Vaporeon-themed aswell.
Also, I just noticed his hair has three "spikes" like a Vaporeon. One at the top and one at either side. Look in the image in my sig and you'll see what I mean. So yeah. I think he's based on a Vaporeon not a Gyarados.