Which titan was destined to defeat Poseidon?

The titan destined to defeat Poseidon is known as Atlas. In Greek mythology, Atlas was condemned to hold up the sky, often associated with the weight of the world, and his role in the Titanomachy positioned him against the Olympian gods, including Poseidon. However, it’s important to note that in some interpretations, the prophecy or mythological narratives can vary, and other titans like Cronus also played significant roles in conflicts with the Olympian gods.