A reader might know things that the characters do not.
This perspective can create suspense by allowing the reader to anticipate potential dangers or conflicts that the characters are unaware of, leading to a buildup of tension as the reader wonders how the characters will react when they finally learn the truth. Similarly, this knowledge can also lead to humor, as the reader may find it funny to watch characters stumble through situations obliviously, creating comedic moments when their ignorance clashes with the reader's awareness.