[Jamz]

Yes. Which gives you all that summon monster stuff.

But there is a "Checkbox" that denotes "This is a summon monster and should apply a template".

Basically, it's the difference between Summon Minor Monster & Summon Minor Ally for a Bat. One requires Celestrial/Fiendish template, the other doesn't.

The Hero.NeedSumTem simply drives this "Checkbox". From what I can tell, you bake this tag in for "most" creatures but not all.