I get that this is a reference to the Carnival dancers, and that Quaquaval has turned from a duck into a peacock. But Carnival is usually associated with Brazil, not Spain. And if he's a peacock, he's a freaking ugly one.
You can't see it in this artwork, but Quaquaval summons a halo of water-feathers to act as a tail when in battle. It kinda looks like crap, though. And those Ikki the Phoenix feathers trailing from his hips don't help. Not to mention the bell-bottoms and freaky mutant toes.
Also the overall posture is just really off-putting to me, like why's he cranking that dumpy so far back? Calm down.
Overall: 2/10