What is theseus's last name?

Theseus is a legendary hero from Greek mythology and does not have a last name in the modern sense. He is often referred to simply as Theseus, the son of Aegeus, King of Athens. In various myths, he is known for his adventures, including slaying the Minotaur and uniting the regions of Attica. His lineage is sometimes highlighted, but he is primarily recognized by his first name and heroic deeds.