Who were the Olympians gods as per greek mythology and why they were called Olympians?

Answer 1

The Olympians are a group of 12 gods who ruled after the overthow of the Titans. All the Olympians are related in some way. They are named after their dwelling place Mount Olympus.
Zeus
Poseidon
Hades
Hestia
Hera
Ares
Athena
Apollo
Aphrodite
Hermes
Artemis
Hephaestus

In the ancient Greek religion, the Twelve Olympians are the major deities of the Greek pantheon, were sometimes included as part of the twelve Olympians (primarily due to the influence of the Eleusinian Mysteries), although in general Hades was excluded, because he resided permanently in the underworld and never visited Olympus.

Answer 2

The Olympian Gods Are The Third Immortal Species In Greek Mythology, After The Protegenoi And The Titans. They Were Called The Olympian Gods Because They Resided In Mount Olympus.