Hee to the King, Ho!

I forgot to record this battle on my first playthrough, in case you haven't noticed how easy it was for me to take down this boss.

You can actually fight this "sidequest boss" immediately after clearing this dungeon and defeating Mick the "Fat Freak".

Just make sure you have the proper defenses and items before you start because I need to remind you that the enemy AI actually responds appropriately to what skills you have equipped, what elemental shields you deploy and will take full advantage of your weaknesses as well as having no qualms of exploiting the moment your characters get frozen by their ice attacks to defeat you.