In Kafka's The Metamorphosis, Gregor Samsa awakens to find himself transformed into a monstrous vermin or insect. The text describes him as a gigantic insect (often translated as beetle or bug). The other options are incorrect - he does not become a frog (that's a different transformation tale), an enlightened being (the story is about alienation, not enlightenment), or a handsome prince (this is a dark work, not a fairy tale).