Maplestory "High Five" Private Showcase

The only commander we don't have a proper boss fight for, is Will,The King of Spiders (who you may remember from Zero's storyline, he's listed as having survived his encounter with them; so he's still an active commander)

Well and I guess Arkarium if you want to be technical (since its heavily implied he's merely toying with you in the current boss fight with him)

I feel Arkarium at his full power would be better suited as a penultimate boss right before the Black Mage though, given that he's his right hand man.

Isn't Ark still recovering from the attack from one of the others (trying to avoid spoilers but)