So, I found something interesting on the Extreme Quest: Risk Realm
I do the solo version but I believe this also works on the 4man as well, on the Visiphone website there are enemies and enhanced enemies and I had no idea how to get consistent Fodrus mobs as an enemy.
Then I went to the JP wiki and they are translated as [Success] and [Fail] so I tested succeeding or failing requirements on every stage, and depending on what you do the enemy might change or become easier.
Basically what I ended up doing is just failing everything except the 2nd stage requirement, so I get a Fodrus on the 3rd stage. Every other stage is not needed unless you want more drops.
I believe the Ultimate Quest might have a better drop chance, but at least this is another way to consistently fight that boss.
Good luck guys~