This character is too ignorant to realize that he is ignorant. He has so little power and knowledge that he has nothing to compare with, and thus grossly overestimate his own power, knowledge and importance. Likely to live in a Small Secluded World or be saturated in Paranoia Fuel... or both. Children and animals are normally excused from this trope. They can be included in special cases when their "ignorance of ignorance" is highlighted rather then simply a part of who they are — or when they have powers way beyond their maturity, so that their lack of understanding becomes a problem.