Final answer:
The Greek who deceives the Trojans into bringing the horse into the city of Troy is Laocoon. Laocoon was a Trojan priest of Poseidon who warned the Trojans to beware of Greeks bearing gifts when the Greeks left a large wooden horse at the gates of Troy. He and his two sons were later killed by sea serpents sent by Athena or Poseidon.
Step-by-step explanation:
The Greek who deceived the Trojans into bringing the wooden horse into the city of Troy was Odysseus. This event is one of the most famous in Greek mythology, relating to the Trojan War.
While Laocoon warned the Trojans about Greeks bearing gifts, it was Odysseus's cunning plan that ultimately led to the downfall of Troy. His ingenuity in devising the Trojan Horse is a testament to his reputation as a clever and resourceful hero in Greek mythology.