helper

My favorite episode is the one where Homer gets a helper monkey named Mojo.

Because I had delivered the poor man that cried out; and the fatherless, that had no helper.

Rafferty was a man of genius, who had started as a helper and odd job person, and had risen to the position of factotum.

Think of a lad of nineteen being a general in our Revolutionary War, and the trusted friend and helper of Washington!