Ahem.

The year is 2169.

Scientists working with interdimensional portal development made some big mistakes.  Because of that, a large interdimensional portal covers the whole of Antarctica.

We here in the Dimensional Defence Agency must stop anything from coming out of that portal.

The DDA is led by I, Rodlen, and Yoda is my second in command.

Already, somebody calling himself Overlord Purplebeard has escaped from the portal.

Repeal all dynastic rules.  Replace all mentions of Henchman with DDA Member and all mentions of Overlord with DDA Commander in the ruleset.