Dark Knights Of Steel Vol 01 TP DC Comics

An entire medieval world will be forever changed when a spaceship crash-lands from a doomed planet. Years later, the El Kingdom reigns, and Jefferson Pierce, the head of the Kingdom of Storms, sees their family as a threat and gathers allies to challenge them. Monarchs will die, kingdoms will rise, and what seemed like the end of the world for many was only the beginning! An epic high-fantasy story set in a DC Universe where nothing is what it seems…

Collecting DARK KNIGHTS OF STEEL #1-6.