As far as goals, Galyxx wants to become the king of all Loumara, which means claiming the Dreaming Gulf as its personal layer. There's one other canonical Archfiend-level Loumara in existence, Sifkhu, and they are currently a prisoner of Malcanthet. So a heist/raid of sorts on Malcanthet's castle to steal the gem containing Sifkhu's soul would be necessary.<br/><br/>As far as reasons for other people to join in, I figure anything that screws over Malcanthet will have Tourahime/Muramasa onboard. Not sure what the other Archfiends might get out of such an adventure, though the gold to be gained from raiding the Succubus Queen's treasure vaults can't be ignored.