Alusphere

Ooh yes, more Skies Of Arcadia fan art. This time, an Alusphere from the depths of Mount Kazai. These guardian chappies always came in pairs, and you pretty much had to face the first 2 of them. The group in the walls of a slightly later passage could be avoided entirely if you went to the trouble to raise the water, and cross the blocks between them, which would then be on a level above them. Of course, if you wanted the experience, you could fight them all.
They tended to do a move called Drain, which seemed pretty much related to the Driln spell, plus they could also stone you with a normal attack. I think they sometimes gave you a Gem Of Fluidity after the battle. And you always got something like 888 gold pieces as well.

(Yep, Skies Of Arcadia & the Aluspheres belong to Sega / OverWorks.)