I do and I already got Diablos

Also a side question I have

Why is Quezacotl leveling up literally every 3-4 fights and is about 6 levels ahead of all my other GFs including Shiva, who I have had the SAME amount of time. I have all my GFs junctioned but they arent doing nearly as well.
AND he summons in less than half the time of my other GFs. the others will be less then half done their bar before I even summon Quezacotl but he still goes first ALWAYS
is he some kinda superfast GF and I just didn't know about it

OH and how often does the cactuar pop up on said island