Final answer:
Theseus and the Chimaera do not encounter each other in classical mythology. Theseus is famed for killing the Minotaur, while Hercules, Perseus, and Odysseus faced Cerberus, Medusa, and Polyphemus respectively.
Step-by-step explanation:
In classical mythology, Theseus and the Chimaera do NOT encounter each other. Theseus is known as the Athenian hero most famous for slaying the Minotaur. The Chimaera is a mythical monster that has the appearance of a lion with a goat's head protruding from its back and a snake for a tail, but it is not part of Theseus's adventures. On the other hand, Hercules encountered Cerberus during his twelve labors, specifically the task of bringing Cerberus back to King Eurystheus. Also, the Greek hero Perseus is well-known for his encounter with Medusa, whom he defeated by turning her into stone. Lastly, Odysseus had a notable run-in with the Cyclops Polyphemus during his long voyage home from the Trojan War.