“Noah, who draws comic books in his free time, wants to write a graphic novel.” This is because you are adding a little background knowledge about Noah that is not especially important to the topic. You could easily say “Noah wants to write a graphic novel” and need no punctuation but when you are adding “who draws comic books in his free time” you need two commas.
Answer: He is a cowardly and evil man who is angry about Atticus defending a black man, Tom Robinson and accusing Ewell himself of beating up his own daughter, the same daughter Robinson was accused of raping.