Acoa is a Rogue Spellcaster from the Great Kingdom of Oerth, who is now a Baron in Sterich. He works with others so long as it benefits him in some way, and he's not overly picky about who he works with, good or evil. As long as the job gets done and he's made a profit, that's all that matters. On this picture I tried to make it a 'birds-eye-view' of what it would look like if Acoa jumped out of nowhere and offloaded a barrage of magic. Hopefully you get that impression too.