This is a really fun picture!!
At first it didnt seem like there were TOO many characters, but then you realize there are hidden ones, so that was fun!
Luna and Lucia look familiar... where have I seen that same pose before?
Also, really?? That is Zophar which Alex and Hiro are attacking?
Can I see what you used as a reference? I'm beyond puzzled as to how that can be Zophar.
It looks like you have drawn a blonde haired human in what seems to be a blue suit. I can't figure out what those two... large brown things are supposed to be, which Ruby is burning.
Zophar's skin is like in between grey and light blue

And his hair is dark blue. And his suit is ... a complex looking combination of things x)
I also can't figure out what it is in between Laike and Gwyn. A music tower thingy? Man I'm gonna feel dumb if this is more obvious... oh wait.................... that's not Althena's Fortress is it? wow XD Still finding hidden things.