Clay Jensen is a fictional character from the book series and Netflix series titled 13 Reasons Why. He is a high school student who becomes deeply affected by the suicide of his classmate, Hannah Baker. Clay is portrayed as sensitive and introspective, often grappling with his emotions and the impact of Hannah's death on his life and relationships. Throughout the story, Clay listens to a series of cassette tapes recorded by Hannah, where she explains the reasons behind her decision to end her life. His journey involves uncovering the truth about the events leading up to her death and confronting the people involved, ultimately seeking closure and understanding.