Which mythological figure is known for solving the riddle of the sphinx?

The figure known for solving the riddle of the Sphinx is Oedipus. According to Greek mythology, the Sphinx was a creature that posed a riddle to travelers to Thebes, and anyone who could not answer it was killed. The riddle famously asked, "What walks on four legs in the morning, two legs at noon, and three legs in the evening?" Oedipus was the one who correctly answered the riddle with "Man," referring to the stages of human life. By solving the riddle, he not only saved himself and others from the fate of the Sphinx but also went on to become the king of Thebes.

The other figures mentioned—Theseus, Jason, and Perseus—are associated with their own distinct myths and adventures but do not have any connections to the Sphinx's riddle. Theseus is known for defeating the Minotaur, Jason for his quest for the Golden Fleece, and Perseus for slaying Medusa. Their stories do not involve the confrontation with the Sphinx, making Oedipus the singular figure associated with that particular myth.