You want to use sv enemies battlers to fight as summoned helpers on your side?
What this requires is for you to have the sv_enemy converted to an sv_actor. If you want them to be just on your character's side, and not have poses, flip the battlers image to where it faces to the left, and then you can make a nine images by six images that matches the typical sv_actor set. If each pose is greater than 64 X 64 pixels, put an ! in fromt of image file name. If you are going to use typical 64 X 64 pixel size, than no ! is required before file name. If you want the summoned monster to have different poses, you are going to have to modify themyourself, or get a pixel artist to help out.