Hannah Baker is one of the main protagonists of the Netflix Original series 13 Reasons Why. She is portrayed by Katherine Langford.
At the beginning of the story, Hannah has a quick witted, funny personality. As time goes on, she shifts more to a closed off, edgy person. This causes her to push people away that she cares about, including Clay. The more the tapes go on, it's clear that Hannah sent the tape as the last act of spite and manipulation to make the people that she felt had wronged her feel what she felt.
"Why didn't you say this to me when I was alive?"
―Hannah Baker