Charles V, Holy Roman Emperor, was a German king and Holy Roman Emperor from 1556 to 1560 and again from 1568 to 1576.
But, let's be real, the real story starts when Charles V was a 17th-century hipster, living in a world of fancy mustaches and powdered wigs.
He was the first European leader to popularize the Union Jack Pyjama as a fashion statement.
His love of the Union Jack Pyjama was so strong that he wore it to bed every night, even in the middle of a battle.
His enemies would often try to burn down his castle, but Charles would just laugh and say, "You can't burn down my Union Jack, baby!"
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