D&D General Iron Gods/Expedition to the Barrier Peaks: What Sci-Fi theme would you go with?

[Mannahnin]

Sure, naturally, I meant space marine in the pre-GW generic sense. Not an Adeptus Astartes.

 

[smcc360]

I'd go straight Jack Kirby New Gods style: larger-than-life good aliens trying to protect this primitive fantasy world from the villainous machinations of evil robots. Don't forget the on-the-nose names, like Prince Virtuon, Lord Sreelheart, Whiz-Kid, Wylde Dogg, etc.