By the way: If a Celestial cannot be ordered to do evil things,as has been repeately proposed here, would it make summoned Fiends incapable of doing good, or is it again a case of "evil is cooler/easier than good!"? A fiend could very well be able to do everything in its power: It would, exempli gratia, save the orphans from the burning orphanage (to corrupt the caster, and maybe so the orphans will grow to admire the heroic -and cool!- saviour).
And by the way, do not believe these developers- they are all bribed by those so called "Forces of Good" to distribute propaganda into this world glorifying them while diffaming us! The Celestials are the true villians!