User blog comment:PitchBlack696/Monster Hunter Portable 3rd/@comment-3149269-20101214031144/@comment-2040723-20101214063037

No wonder it took so much time for the Gold Ian/Silver Los videos to appear- I looked at the Japanese wiki and it says their quests don't even appear until you hunt a total of 100 wyverns (which the game defines as every boss except the Elder Dragons and the Pelagus.) So much for assuming that the uploaders were being lazy...

Incidentally, Akantor, Ukanlos, and Alatreon have to be unlocked in a similar way as Gold Ian and Silver Los. Akantor and Ukanlos don't appear until you clear all HR single hunt quests and Alatreon is only unlocked after clearing all HR epic quests. Just one more reason to finish every quest, I suppose.