Location: Lefay, Shrine of the Water Trial (Ritual room, where you got the mystic arte). Return to this place after you have cleared all the trial
Recommended Level: 60 – 65
Recommended time frame: After clearing all the trials
I am over-leveled when fight this hellion, so I can’t give you a detail strategy if you want to defeat it on the recommended level range. However, since it has low HP, you can simply enter the battle with max SC on all characters and then unleash all the mystic artes (armatized). My recommendation is to armatize with Mikleo, because his binding vortex is effective against the fiend type and very easy to hit.