Tyranus is a world in Lego Dimensions 2: The Rise of Enoch, inhabited by the Grand Emperor Enoch and the Grand Empire.
Background
Tyranus was once a barren, volcanic planet that was inhabited by monsters because of the surface of the landscape. Sometimes, blacksmiths from across the Multiverse tend to use it's lava source as fuel for their furnaces.
After escaping execution and slaughtering many people at the Interdimensional Criminal Asylum, Enoch and his Grand Empire traveled to the dreadful Tyranus and used it now as his homeworld and base of operations.
Grand Interdimensional War
Tyranus is first seen in Blackville's Most Wanted, there, Enoch declares war on the heroes and orders the Grand Empire to find the Foundation Elements.
In Fate of the Multiverse, it became a major battlefield for the final showdown. After Enoch's death, the world was destroyed by the Power Stone and therefore never seen again.