Issac Kanarek was/is a Mexican yo-yoer, founded the MYYA.
This article mentions the Kukulkan:
Kanarek también ha diseñado dos yoyos, uno homónimo con su apellido y otro bajo el nombre de Kukulkán, los cuales se realizan con un torno especial.
translated
Kanarek has also designed two yo-yos, one with the same name with his last name and another under the name of Kukulkán, which are made with a special lathe.
One was for sale on the forums here, photobucket links don’t work anymore unfortunately and while I found what seems to be @vanamish 's Photobucket account, I don’t see any pictures of yoyos.
One was for sale in this YYN thread, there’s pictures of a case so it’s possible the Kukulkan is pictured.
http://www.yoyonation.net/index.php?topic=16697.0
Maybe there’s a Mexican yoyo forum that might have old info?