A few suggestions, if you want them (if not, just delete without reading).
Watch out for overlapping colors like the mass of blue and grey characters on the right; they tend to blur together. Sure, we can sort 'em out eventually, but that can lower the impact of a picture.
In general, it's a good idea to keep similar-colored characters separated, but since you've already drawn this pic, I'd recommend making the colors more distinct, like adding a touch more green to the red-eyed guy, especially where he overlaps with the others. Otherwise, we can't tell at first glance where either of his upper arms is; one merges into the blue beast-guy's muscles, and the other looks like the redhead's shoulderpad.
Similarly, I'd add more black to the leg of the guy with the red stuff coming out of him, so we can tell his leg apart from the blue beast-guy.
In general, it's also a good idea to avoid having different things line up too closely, like the blue beast-guy's armband aligned with the ring-wielder's blonde hair, but in this case the colors are different enough it's not a problem.
And on the left I'd recommend giving the Tikbalang as clear an outline as the others so he doesn't merge into the black background. I didn't even see him the first time I looked at the picture, and since I LOVE your great Tikbalangs, I want to see more!