What is a pronoun for maniac?

The pronoun that takes the place of the noun 'maniac' in a sentence is 'he' or 'she' as the subject, and 'him' or 'her' as the object. Examples:

That maniac threw a rock through the store window. He just picked it up and threw it. I saw him.

That maniac threw a rock through the store window. She just picked it up and threw it. I saw her.