well in Real CO the ninja doesnt get a summon. they can only get SummonGuard skill. the only way they can get a different summon is being somethin-War,Tro,Fire/water, arch- ninja. but if you want a summon in the server just look for a monster mesh and ID and make it into a summon skill for ninja's. like you want a ( gooing extreme) RedDevil for the ninja, copy the skill Code for idk, like BloodyBat and change the Mesh ID's and everything and names to the name you want for the ninja. im trying to find out how to make a monster myself. but im too lazy to do the rest. well i hope i helped ya