What Is the Signification of Dill in the Novel as a Whole?

What is the significance of dill in the novel as a whole?
Dill is nearly seven at the beginning of the book and he’s real name is Charles Baker Harris, Dill is Jem and Scout's friend, but in the novel Dill is represented as childhood innocence in the novel one time Dill shows his innocence, is during the trial of Tom Robinson. He breaks down while Tom Robinson is being cross examined by the prosecutor.   This is an example of his guiltlessness because he believes that it’s wrong wrong for the prosecutor to talk down to Tom because of his race also to show how unfair the world is. “It was just him I couldn’t stand,” Dill said
“Who, Tom?”
“That old Mr Gilmer doin’ him that away, talking so hateful to him--”
“Dill, that’s his job. Why, if we didn’t have prosecutors-well, we couldn’t have defense attorneys, I reckon.”
Dill exhaled patiently. “I know all that, Scout. It was the way he said it made me sick, plain sick.”
But the most important feature of dill is to demonstrate the differences between the ways children are raised in the story. Dill comes from a debilitated family, Dill's family life is dramatically different than the Finch children, where as Jem and Scout have a father who loves and cares for them. Dill, on the other hand, has a mother who doesn't need to be bothered with him in Meridian, Mississippi and ships him off to his Aunt Rachel's in Maycomb every summer.
Involved in their antics Neighbourhood is the curiosity of Dill about Boo Radley which stimulates own interests of the child trying to "make Boo come out." Dill comes from the idea of the game Radley, and he dares to run first Jem and touch the Radley house.